Can somebody please help me with Calculus?
I know this is supposed to be really easy, but apparently since I`ve been out of high-school for more than an year, I`ve loast my credibility as a student.
f(x)=7x^2-2x.
Now find f prime of (x). ............... But how do I find f`(x) if no point is given?
Moreover find slope at x=3, x=4 & x=7. For some reason I can`t figure out how to do this easy stuff.
We`re not allowed to use derivatives at this point.
Thanks in advance.
I know this is supposed to be really easy, but apparently since I`ve been out of high-school for more than an year, I`ve loast my credibility as a student.
f(x)=7x^2-2x.
Now find f prime of (x). ............... But how do I find f`(x) if no point is given?
Moreover find slope at x=3, x=4 & x=7. For some reason I can`t figure out how to do this easy stuff.
We`re not allowed to use derivatives at this point.
Thanks in advance.
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f '(x) = 14x - 2
f '(3) = 14(3)-2 = 40
f '(4) = ...
f '(7) = ...
f '(3) = 14(3)-2 = 40
f '(4) = ...
f '(7) = ...