April 18, 2014

Homework Help: Derivative Calculus

Posted by Steff on Tuesday, June 14, 2011 at 10:10pm.

I just need my answers checked.

1) Find the derivative.

f(x)=3x^5/4 - 8/9x^9/8 + x^2 - 9x + 1

Answer: f(x)= 15/4x^1/4 - x ^1/8 + 2x -9

2) Let f(x)= 7x^3 - 9x. Find f(5)

Answer: f(x)=21x^2-9

3) Find the given limit by evaluating the derivative.

lim h⇒0 5(7+h)^2 - (7+h)-238

Answer: 69

4) Find the slope and an equation of the tangent line to the graph of the function f at the specified point.

f(x)=-1/3x^2+5x+5: (-1, -1/3)

Answer: f(x)=-2/3x + 5

y=-2/3x -1

Answer this Question

First Name:
School Subject:

Related Questions

derivative - I am finding the second derivative of (x^2)(y^3) = 1 2x(y^3) + (x^2...
Calc, Mean Value Theorem - Consider the function : 3x^3 - 2x^2 - 4x + 1 Find the...
Calculus 12th grade (double check my work please) - 1.)Find dy/dx when y= Ln (...
Pre Algebra - the problem is about adding and subtracting polynomials... This is...
Calculus - I need help with these two review calculus problems for my final exam...
Algebra - Can someone check my algebra answers and help me with the problems I ...
Urgent Math please check - Very Important I can get someone to check these for ...
Polynomial- Doublecheck2 - I asked this earlier, but I didn't get an answer. I'm...
Calculus Verification - I just want to make sure im right. Find the derivative ...
Calculus - find the derivative of 4x(lnx+ln9)-9x+e