Homework Help: calculus

Posted by Don on Tuesday, August 28, 2012 at 6:00pm.

I need help with the following question:

Which of the following is an example of a function whose derivative is always 3?

Choices are: f(x) = x=3
f(x) = 5x+3
f (x) = 3x+5
f(x) = 3
Thank you.

calculus - bobpursley, Tuesday, August 28, 2012 at 6:01pm
I wonder why you asked. Something is troubling that you asked. Derivative is slope.

f(x)=3x+5 line has a slope of 3, and a derivative of 3 for all x.

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