Answer: (a) Sketch the semicircle (b) Explain why without evaluating either integral

Chapter 8, Problem 112

(choose chapter or problem)

(a) Sketch the semicircle \(y=\sqrt{4-x^{2}}\).

(b) Explain why

\(\int_{-2}^{2} \frac{2 d x}{\sqrt{4-x^{2}}}=\int_{-2}^{2} \sqrt{4-x^{2}} d x\)

without evaluating either integral.

Text Transcription:

y=sqrt 4-x^2

int_-2^2 2 d x/sqrt 4-x^2=int_-2^2 sqrt 4-x^2 dx

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