Did I wrote this math question wrong
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Did I wrote this math question wrong

[From: ] [author: ] [Date: 12-04-16] [Hit: ]
I hope this helps!Edit:Its not possible for the answer to be (3x³ - 2),It has to be 3x², since the derivative takes off a power of the term.......
Find the derivative.
x^3 -2x -8

I use the lim(h->0) [f(x+h) - f(x)] / h. I got 3x^2

The ANSWER is supposed to be 3x^3 -2.

CAN YOU DO BACKWARD MATH OR SOMETHING TO FIND THE QUESTION FOR ME? IT'S DUE TOMORROW.

This question isn't in the textbook. It was in the whiteboard in school.

-
The derivative is actually 3x² - 2.

By using the power rule for each individual term, we have:
d/dx (x³) - d/dx (2x) - d/dx (8).
This then turns into 3x² - 2.

When you were doing the derivative through the limit definition, you probably made a mistake.

I hope this helps!

Edit: It's not possible for the answer to be (3x³ - 2), It has to be 3x², since the derivative takes off a power of the term.
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