# Thread: Easy Derivatives - Can You Check...?

1. ## Easy Derivatives - Can You Check...?

1. Use the Power Rule and the Sum and Difference rules to find the derivative of:

y = (x^2 - 2sqrt(x))/(sqrt(x))

My answer: ((3/2) third(sqrt(x^2)) - (1/2))/x

I used the quotient rule for this because I didn't know how to use the Power Rule and the Sum and Difference rules to find the derivative of it.

2. Use the quotient rule to find the derivative.

y= (thirdsqrt(x^2))/(2sqrt(x)) , Get f'(-1)

Derivative: ((1/3)x^(1/6))/(4x)

Note: thirdsqrt is the little three thing with the sqaure root. Eg. thirdsqrt(27) = 3

2. Originally Posted by AlphaRock
1. Use the Power Rule and the Sum and Difference rules to find the derivative of:

y = (x^2 - 2sqrt(x))/(sqrt(x))

My answer: ((3/2) third(sqrt(x^2)) - (1/2))/x

I used the quotient rule for this because I didn't know how to use the Power Rule and the Sum and Difference rules to find the derivative of it.

2. Use the quotient rule to find the derivative.

y= (thirdsqrt(x^2))/(2sqrt(x)) , Get f'(-1)