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Find the derivative if x= -2

Find the derivative if x= -2-example-1

1 Answer

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Answer:

-27e^(-2).

= -3.654 to 3 decimal places.

Explanation:

d/dx((3x^2 + 3)e^-x)

Using the Product Rule:

Derivative = (3x^2 + 3) d/dx(e^-x) + e^-x d/dx(3x^2 + 3)

= -e^-x(3x^2 + 3) + e^-x(6x)

= e^-x(6x -1*(3x^2 + 3))

= e^-x(6x - 3x^2 - 3)

= 3e^-x(2x - x^2 - 1)

= -3e^-x(x^2 - 2x + 1)

= -3e^-x(x - 1)^2

When x = -2,

Derivative = -3e^(-2)(-2-1)^2

= -27e^(-2)

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