Question
Asked Oct 17, 2019
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f(x)=2x÷x^2+8x+15 

Graph tell what's points are increasing and decreasing mark mark  that are positive and negative

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Expert Answer

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Step 1

The function is given by,

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2x f(x) x8x +15

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Step 2

Find the singular points.

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x28x15 0 x5x3x +15 = 0 x(x+5)+3(x+5) 0 (x+3)(x+5) 0 x -3,-5

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Step 3

Find the critical points to find the points that ...

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f'(x) 0 ( 8x +15)(2)-(2x)(2x+8) (x2 =0 +8x+15 2x2 16x30 4x2+16x 0 -2x30 0 x8x1r)2 -2x230 0 x2 15 Thus, the critical points are x-3,-V15,-5, /15

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Tagged in

Math

Calculus