- #1

- 77

- 1

my answer is:

(-e^-x) ((1-x)^1/2) + (e^-x)/((-1/2 + 1/2x)^-1/2))

is this correct?

thankyou

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- Thread starter cabellos
- Start date

- #1

- 77

- 1

my answer is:

(-e^-x) ((1-x)^1/2) + (e^-x)/((-1/2 + 1/2x)^-1/2))

is this correct?

thankyou

- #2

- 195

- 1

In the second part I belive the -1/2 term is outside the underroot

- #3

cristo

Staff Emeritus

Science Advisor

- 8,107

- 73

my answer is:

(-e^-x) ((1-x)^1/2) + (e^-x)/((-1/2 + 1/2x)^-1/2))

is this correct?

thankyou

You want to differentiate this: [itex]e^{-x}(1-x)^{1/2}[/itex]? You have used the product rule correctly, but the second term is incorrect. The second term is [tex]e^{-x}\frac{d}{dx}(1-x)^{1/2}=e^{-x}(1-x)^{-1/2}\cdot(-\frac{1}{2})[/tex]

Note that, when using the chain rule on the parentheses, whatever's inside the parentheses does not change.

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