Finding Derivatives and Using Point-Slope Form

[hman24]

Homework Statement

Need help with all of question 8 , any help would be appreciated thanks :D

Homework Equations

The Attempt at a Solution

 

[80past2]

so find the derivative of those functions, and plug in x= whatever point they asked about. that's the slope at that point. so for the first one, find f'(x), and then plug in 1.

 

[Ray Vickson]

Homework Statement

Need help with all of question 8 , any help would be appreciated thanks :D

Homework Equations

The Attempt at a Solution

You DO know that the slope of the tangent line equals the derivative, don't you? Well, in 8(i) you have y = (3x^2 - x - 3)^3. What is preventing you from taking the derivative?

The other are all similar: either use derivative formulas you have covered in class, or look in the book for related material that you may not have covered explicitly, or else consult tables of derivatives, etc. Basically, you just need to start.

RGV

 

[genericusrnme]

Do you know how to chain rule?

 

[iRaid]

Find the derivative (which is the slope), then use point slope form:
y-y1=m(x-x1)