Sunday

March 29, 2015

March 29, 2015

Posted by **terra** on Monday, September 26, 2011 at 3:15pm.

f(x) = x - sqrt(x)

so f'(x) = lim

h->0 [f(x+h) - f(x)]/h

but I keep trying to solve by multiplying by the conjugate but I can't figure it out..there's nothing that can be cancelled or anything and I can't get the derivative

- math -
**terra**, Monday, September 26, 2011 at 3:40pmSome studies suggest that kidney mass K in mammals (in kilograms) is related to body mass m (in kilograms) by the approximate formula K = .007m^(0.85). Calculate dK/dm at m = 68. Then calculate the derivative with respect to m of the relative kidney-to-mass ratio K/m at m = 68.

- math -
**terra**, Monday, September 26, 2011 at 3:41pmahh sorry that was supposed to be a new question. i need help with both though hahah, so pleaseee help me! i know derivatives but not in these contexts.

**Answer this Question**

**Related Questions**

calc - find derivative using limit definition: f(x) = x - sqrt(x) so f'(x) = lim...

calc - limits - I have been trying to figure out these limit problems and I get ...

Math- Calculus - I need help with these problems, I cannot find a similar ...

Calculus - Evaluate the limit, if it exists. lim (sqrt(x+2) -3)/(x-7) (x -> 7...

precalcus - can someone explain how to evaluate limits? i only learned how to ...

Calculus - Evaluate the definite integral from [0,4] 4x^2 dx, by using its ...

calculus again - Suppose lim x->0 {g(x)-g(0)} / x = 1. It follows necesarily ...

applied calculus - 3. a) Write out the limit definition for the derivative of y...

Applied calculas - 3. a) Write out the limit definition for the derivative of y...

calculus - I am trying to find equation of the tangent line to the curve 2/(1-3x...