What is the formula for the tangent line of x3 at x=2?

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Lesson Parent: 
The Formula of the Tangent Line
Problem: 

What is the formula for the tangent line of x3 at x=2?

Answer: 

y=12x−16

SAMPLE SOLUTION

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Solution: 

We know that the general formula for the tangent line at a point xo for f(x) is

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In this problem xo=2, <Sign in to see all the formulas>, and <Sign in to see all the formulas>. Therefore,

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