Calculus
posted by Jake .
Find each function, find f(a+h) and f(a+h)f(a)
a) f(x)=5x2

Calculus 
Damon
5(a+h) 2 = 5a + 5h  2
5(a) 2 = 5 a  2
subtract
5 h is the answer
now if we were doing calculus we would divide that by h and then let h go to 0
5 h/h = 5
and we call that the "derivative" of f(x)=5x2 
Calculus 
Jake
May I know where you got 5a + 5h  2

Calculus 
Damon
f(a+h) = 5(a+h)  2
from your function definition
5(a+h) 2 = 5 a + 5 h  2 
Calculus 
Jake
Thank you~
Respond to this Question
Similar Questions

math (calculus) PLZZZ help!
Consider the function below. (Round the answers to two decimal places. If you need to use  or , enter INFINITY or INFINITY.) f(x) = e^x/1+e^x find the horizontal and vertical assymptotes? 
calculus
At the indicated point for the function, find the following. A graphing utility's numerical derivative feature can be used to check your work. y = (x3 + 2x)3 at x = 3 (a) Find the slope of the tangent line. (b) Find the instantaneous … 
Calculus
Let f be the function be defined by f(x)=5^((2x^2)1)^(1/2) A) is f an even or odd function? 
calculus
Let f be the function be defined by f(x)=5^((2x^2)1)^(1/2) A) is f an even or odd function? 
Clueless in calculus
Let f be the function be defined by f(x)=5^((2x^2)1)^(1/2) A) is f an even or odd function? 
PreCalculus
Find the inverse function for the function f(x)=2^(x)+1/2^(x)1 You will need to use some properties of logarithmic functions to find the inverse of this particular function. 
Calculus
function f(x)=x3x2−1 defined on the interval [−16,16] A. Find the vertical asymptotes of function f(x) B. Find where it is concave up C. Find the inflection points 
Calculus
function f(x)=x3x2−1 defined on the interval [−16,16] A. Find the vertical asymptotes of function f(x) B. Find where it is concave up C. Find the inflection points 
calculus help
Produce graphs of f that reveal all the important aspects of the curve. Then use calculus to find the intervals of increase and decrease and the intervals of concavity. f(x)= 1+(1/x)+(5/x^2)+(1/x^3) find the interval of increase. find … 
calculus
8. Find the derivative of the function f(x) = cos^2(x) + tan^2(x) 9. Find f '(x) for f(x) = xln(x)  5ex. 10. Find f '(x) for f (x) = e(^lnx) + e^(x)ln(x) 11. Find the xcoordinate where the graph of the function f(x) = e^(cosx) has …