To compare the acidity of different solutions, chemistsuse the pH (which is a single

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(t) = ln(t 2 + 1)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = ln(1 x)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = ln(5x2 + 3)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. y = 2x2 + 3 ln x

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. y = arcsin(x + 1)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = arctan(3x)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. P = 3 ln(x2 + 5x + 3)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. Q = a ln(bx + c)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. . f(x) = ln(e2x)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = eln(e2x2+3)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = ln(1 ex)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f() = ln(sin )

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = ln(ex + 1)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. y = x ln x x + 2

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. j(x) = ln(eax + b)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. y = x3 ln x

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. h(w) = w3 ln(10w)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = ln(e7x)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = e(ln x)+1

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f() = ln(cos )

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(t) = ln(eln t )

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(y) = arcsin(y2)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. s(x) = arctan(2 x)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. g() = sin(arcsin )

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. g(t) = earctan(3t2)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. g(t) = cos(ln t)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. h(z) = zln 2

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. h(w) = w arcsin w

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = eln(kx)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. r(t) = arcsin(2t)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. j(x) = cos sin1 x 

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = cos(arctan 3x)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(z) = 1 ln z

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. g(t) = ln(kt) + t ln(kt) t

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(w)=6w + 1 w2 + 5 ln w

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. y = 2x(ln x + ln 2) 2x + e

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = ln(sin x + cos x)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(t) = ln(ln t) + ln(ln 2)

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. T (u) = arctan  u 1 + u 

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. a(t) = ln 1 cos t 1 + cos t 4

For Exercises 141, find the derivative. It may be to your advantage to simplify before differentiating. Assume a, b, c, and k are constants. f(x) = cos(arcsin(x + 1))

Let f(x) = ln(3x). (a) Find f (x) and simplify your answer. (b) Use properties of logs to rewrite f(x) as a sum of logs. (c) Differentiate the result of part (b). Compare with the result in part (a).

On what intervals is ln(x2 + 1) concave up?

Use the chain rule to obtain the formula for d dx(arcsin x).

Using the chain rule, find d dx(log x). (Recall log x = log10 x.)

To compare the acidity of different solutions, chemists use the pH (which is a single number, not the product of p and H). The pH is defined in terms of the concentration, x, of hydrogen ions in the solution as pH = log x. Find the rate of change of pH with respect to hydrogen ion concentration when the pH is 2. [Hint: Use the result of Problem 45.]

The number of years, T , it takes an investment of $1000 to grow to $F in an account which pays 5% interest compounded continuously is given by T = g(F) = 20 ln(0.001F). Find g(5000) and g (5000). Give units with your answers and interpret them in terms of money in the account.

A firm estimates that the total revenue, R, in dollars, received from the sale of q goods is given by R = ln(1 + 1000q2). The marginal revenue, MR, is the rate of change of the total revenue as a function of quantity. Calculate the marginal revenue when q = 10.

(a) Find the equation of the tangent line to y = ln x at x = 1. (b) Use it to calculate approximate values for ln(1.1) and ln(2). (c) Using a graph, explain whether the approximate values are smaller or larger than the true values. Would the same result have held if you had used the tangent line to estimate ln(0.9) and ln(0.5)? Why?

(a) Find the equation of the best quadratic approximation to y = ln x at x = 1. The best quadratic approximation has the same first and second derivatives as y = ln x at x = 1. (b) Use a computer or calculator to graph the approximation and y = ln x on the same set of axes. What do you notice? (c) Use your quadratic approximation to calculate approximate values for ln(1.1) and ln(2).

(a) For x > 0, find and simplify the derivative of f(x) = arctan x + arctan(1/x). (b) What does your result tell you about f?

Imagine you are zooming in on the graph of each of the following functions near the origin: y = x y = x y = x2 y = sin x y = x sin x y = tan x y = x/(x + 1) y = x3 y = ln(x + 1) y = 1 2 ln(x2 + 1) y = 1 cos x y = 2x x2 Which of them look the same? Group together those functions which become indistinguishable, and give the equations of the lines they look like.

In Problems 5356, use Figure 3.30 to find a point x where h(x) = n(m(x)) has the given derivative. h (x) = 2

In Problems 5356, use Figure 3.30 to find a point x where h(x) = n(m(x)) has the given derivative. h (x)=2

In Problems 5356, use Figure 3.30 to find a point x where h(x) = n(m(x)) has the given derivative. h (x)=1

In Problems 5356, use Figure 3.30 to find a point x where h(x) = n(m(x)) has the given derivative. h (x) = 1

In Problems 5759, use Figure 3.31 to estimate the derivatives (f1)  (5)

In Problems 5759, use Figure 3.31 to estimate the derivatives (f1)  (10)

In Problems 5759, use Figure 3.31 to estimate the derivatives (f1)  (15)

In Problems 6062, use Figure 3.32 to calculate the derivative. h (2) if h(x)=(f(x))3

In Problems 6062, use Figure 3.32 to calculate the derivative. k (2) if k(x)=(f(x))1

In Problems 6062, use Figure 3.32 to calculate the derivative. g (5) if g(x) = f1(x)

(a) Given that f(x) = x3, find f (2). (b) Find f1(x). (c) Use your answer from part (b) to find (f1)  (8). (d) How could you have used your answer from part (a) to find (f1)  (8)?

(a) For f(x)=2x5 + 3x3 + x, find f (x). (b) How can you use your answer to part (a) to determine if f(x) is invertible? (c) Find f(1). (d) Find f (1). (e) Find (f1)  (6).

Use the table and the fact that f(x) is invertible and differentiable everywhere to find (f1)  (3).

At a particular location, f(p) is the number of gallons of gas sold when the price is p dollars per gallon. (a) What does the statement f(2) = 4023 tell you about gas sales? (b) Find and interpret f1(4023). (c) What does the statement f (2) = 1250 tell you about gas sales? (d) Find and interpret (f1)  (4023)

Let P = f(t) give the US population6 in millions in year t. (a) What does the statement f(2005) = 296 tell you about the US population? (b) Find and interpret f1(296). Give units. (c) What does the statement f (2005) = 2.65 tell you about the population? Give units. (d) Evaluate and interpret (f1)  (296). Give units.

Figure 3.33 shows the number of motor vehicles,7 f(t), in millions, registered in the world t years after 1965. With units, estimate and interpret (a) f(20) (b) f (20) (c) f1(500) (d) (f1)  (500)

Using Figure 3.34, where f (2) = 2.1, f (4) = 3.0, f (6) = 3.7, f (8) = 4.2, find (f1)  (8).

If f is increasing and f(20) = 10, which of the two options, (a) or (b), must be wrong? (a) f (10)(f1)  (20) = 1. (b) f (20)(f1)  (10) = 2.

An invertible function f(x) has values in the table. Evaluate (a) f (a) (f1)  (A) (b) f (b) (f1)  (B) (c) f (c) (f1)  (C)

If f is continuous, invertible, and defined for all x, why must at least one of the statements (f1)  (10) = 8, (f1)  (20) = 6 be wrong?

(a) Calculate limh0(ln(1 + h)/h) by identifying the limit as the derivative of ln(1 + x) at x = 0. (b) Use the result of part (a) to show that limh0(1 + h) 1/h = e. (c) Use the result of part (b) to calculate the related limit, limn(1 + 1/n) n.

In Problems 7476, explain what is wrong with the statement. If w(x) = ln(1 + x4) then w (x)=1/(1 + x4).

In Problems 7476, explain what is wrong with the statement. The derivative of f(x) = ln(ln x) is f (x) = 1 x ln x + ln x 1 x = 2 ln x x .

In Problems 7476, explain what is wrong with the statement. Given f(2) = 6, f (2) = 3, and f1(3) = 4, we have (f1)  (2) = 1 f1(f(2)) = 1 f1(3) = 1 4

In Problems 7780, give an example of: A function that is equal to a constant multiple of its derivative but that is not equal to its derivative.

In Problems 7780, give an example of: A function whose derivative is c/x, where c is a constant.

In Problems 7780, give an example of: A function f(x) for which f (x) = f (cx), where c is a constant.

In Problems 7780, give an example of: A function f such that d dx f1 (x)  = 1 f(x) = 1.

Are the statements in Problems 8182 true or false? Give an explanation for your answer. The graph of ln(x2) is concave up for x > 0.

Are the statements in Problems 8182 true or false? Give an explanation for your answer. If f(x) has an inverse function, g(x), then the derivative of g(x) is 1/f (x).