I'm having trouble with the derivative of a function... : 4 ____ square root(1-x)
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Hello, Originally Posted by cjh824 I'm having trouble with the derivative of a function... : 4 ____ square root(1-x) $\displaystyle \frac{4}{\sqrt{1-x}}=4 \cdot (1-x)^{-1/2}$ Now just apply the chain rule, by using this derivative : $\displaystyle (x^n)'=nx^{n-1}$
Well we have to do it by using the definition of derivative. I got an answer of 2 ___ (1-x)^3/2 but I don't think it's right.
Originally Posted by cjh824 Well we have to do it by using the definition of derivative. I got an answer of 2 ___ (1-x)^3/2 but I don't think it's right. Why do you think it's not right ? Because it's exactly the derivative !
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