Can someone please help me with these 2 questions.
1. f (x) = 7/x^4 - 3/x^3 + 1/x^(1/3)
the answer i get is:
-28/x^5 + 9/x^4 ... but the third part is killing me... can someoen help me differentiate the lsat part of this question... I know the answer but i need to understand how to get there.
2. f (x) = x^4 + 2x^2 - x + 3 / x
I have no idea what i'm doing wrong in this question... do we treat it using the quotient rule? Can someone show the steps for this as wel.
Thanks
hm i have no idea what i'm doing wrong... this is what ive done so far by using the quotient rule:
4x^3+4x-1 (1) - 1 (x^4+3x^2-x+3)
which becomes
4x^3 + 4x -1 - x^4 - 2x^2 + x -3
problem is... there's no x^4 in the answer so i know i did something wrong.
Thanks a lot... I just wanted to know how it would work... How do you determine whether to use the quotient rule or the way you did it? If the bottom is only x or x^2 or x^3 will be always do the way you did it ? What if the denominator was 3x^2, would we use the quotient rule then or the way you did it.
Thanks!