- #1
Janko2
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Homework Statement
So f(x)= x(√x-1)
Homework Equations
The Attempt at a Solution
So i understand that the derivitive of a mutiple is (f x g) prime
f'xg + fxg'
I got
(1)(√x-1) + (x)(1/2x^-1/2)
now I am stuck...
ive used the equation (f(x)-f(x))/x-a and i ended up with x^3/2 -1
but when i used (f')(g)+(f)(g)'
i get 3/2x^1/2 - 1
and now i am just really confused... i could really use some help :D
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