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The range of a function defined piecewise 2016-01-13
From sarah:

f(x)={x-2, x<-2
       {x^2-4, -2_<x_<2
       {x+2, x>2

find the range
Answered by Penny Nom.

Limits 2010-09-20
From rodrigo:
what's the limit of x+1/x-1, when x tends to 1?
Answered by Janice Cotcher.
Vector spaces 2009-07-05
From Nazrul:
How can I prove that m(a+b)=ma+mb where a and b are two vectors. Thank you.
Answered by Harley Weston.
When is the limit of f(x) undefined? 2004-08-03
From Nicolasa:
When is the limit of f(x) undefined?
Answered by Penny Nom.
The line through (4,2) and (4,-8) 2004-04-17
From Kim:
Write an equation for the line.
Given points (4, -8) and (4,2) are on the line.
I believe m=undefined.

How do I solve for b when m is undefined, and then plug in the values for m, b, and y?

Answered by Penny Nom.
(x^2-5x-6)/(x-6) 2001-10-02
From Bill:
given f(x) = (x2-5x-6)/(x-6) find f'(6).
Answered by Harley Weston.



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