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# Solutions for Chapter 7.6: Product-to-Sum and Sum-to-Product Identities ## Full solutions for Algebra and Trigonometry, | 3rd Edition

ISBN: 9780840068132 Solutions for Chapter 7.6: Product-to-Sum and Sum-to-Product Identities

Solutions for Chapter 7.6
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##### ISBN: 9780840068132

This textbook survival guide was created for the textbook: Algebra and Trigonometry,, edition: 3. This expansive textbook survival guide covers the following chapters and their solutions. Since 70 problems in chapter 7.6: Product-to-Sum and Sum-to-Product Identities have been answered, more than 44760 students have viewed full step-by-step solutions from this chapter. Chapter 7.6: Product-to-Sum and Sum-to-Product Identities includes 70 full step-by-step solutions. Algebra and Trigonometry, was written by and is associated to the ISBN: 9780840068132.

Key Calculus Terms and definitions covered in this textbook
• Arccotangent function

See Inverse cotangent function.

• Branches

The two separate curves that make up a hyperbola

• Closed interval

An interval that includes its endpoints

• Coefficient matrix

A matrix whose elements are the coefficients in a system of linear equations

• Data

Facts collected for statistical purposes (singular form is datum)

• Direction vector for a line

A vector in the direction of a line in three-dimensional space

• Divergence

A sequence or series diverges if it does not converge

• Domain of validity of an identity

The set of values of the variable for which both sides of the identity are defined

• equation of a parabola

(x - h)2 = 4p(y - k) or (y - k)2 = 4p(x - h)

• Equilibrium point

A point where the supply curve and demand curve intersect. The corresponding price is the equilibrium price.

• Graph of parametric equations

The set of all points in the coordinate plane corresponding to the ordered pairs determined by the parametric equations.

• Infinite discontinuity at x = a

limx:a + x a ƒ(x) = q6 or limx:a - ƒ(x) = q.

• Limit

limx:aƒ1x2 = L means that ƒ(x) gets arbitrarily close to L as x gets arbitrarily close (but not equal) to a

Any one of the four parts into which a plane is divided by the perpendicular coordinate axes.

• Rational function

Function of the form ƒ(x)/g(x) where ƒ(x) and g(x) are polynomials and g(x) is not the zero polynomial.

• Shrink of factor c

A transformation of a graph obtained by multiplying all the x-coordinates (horizontal shrink) by the constant 1/c or all of the y-coordinates (vertical shrink) by the constant c, 0 < c < 1.

• Solution of an equation or inequality

A value of the variable (or values of the variables) for which the equation or inequality is true

• Terms of a sequence

The range elements of a sequence.

• Viewing window

The rectangular portion of the coordinate plane specified by the dimensions [Xmin, Xmax] by [Ymin, Ymax].

• Weighted mean

A mean calculated in such a way that some elements of the data set have higher weights (that is, are counted more strongly in determining the mean) than others.

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