Math Question

[Mday]

whenever you're told to use a nth root of some function, use the "fractional" equivalent. it's just more logical that way, following the power rule and chain rule combo. EVEN IF IT IS IN THE DENOMINATOR.

you only use the division rule if you have a function on top of another. as nd has shown, the numerator has a derivative of 0. which while simplifies the division rule, you don't even NEED it.

 

[nd]

<< you only use the division rule if you have a function on top of another. as nd has shown, the numerator has a derivative of 0. which while simplifies the division rule, you don't even NEED it. >>

Well, you don't technically need any special technique. Using the quotient rule is perfectly acceptable. All a matter of preference, and it worked out nicely in this situation since there was a square root involved (which dissapears in the denominator when squared using the quotient rule).