My Math Forum  

Go Back   My Math Forum > College Math Forum > Calculus

Calculus Calculus Math Forum


Reply
 
LinkBack Thread Tools Display Modes
March 1st, 2009, 12:01 PM   #1
Newbie
 
Joined: Mar 2009

Posts: 6
Thanks: 0

Find eqation of tangent line

Im stuck on a few...

y = 5?x^3 ; when x = 0
( 5th root, in case it doesn't turn out)

and

p(x) = ax^2 + bx + c ; x = -b/2a ; a, b, and c are constants, a not = 0
SSmokinCamaro is offline  
 
March 1st, 2009, 01:42 PM   #2
Senior Member
 
Joined: May 2008
From: Sacramento, California

Posts: 299
Thanks: 0

Re: Find eqation of tangent line

(power rule), so at , .
(power rule again), so at , . This would make sense because the function's vertex is at .

To get the equation of the tangent line, use point-slope (); plug in the slope of the curve at the point for and the coordinates of the point for and . For , the line is undefined, but for , the equation would be .
SidT is offline  
March 1st, 2009, 01:54 PM   #3
Newbie
 
Joined: Mar 2009

Posts: 6
Thanks: 0

Re: Find eqation of tangent line

Thanks sidT, helped a lot!
SSmokinCamaro is offline  
Reply

  My Math Forum > College Math Forum > Calculus

Tags
eqation, find, line, tangent



Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Find the equation of the tangent line to G(x) . Shamieh Calculus 2 October 7th, 2013 06:12 AM
Find the equation of the tangent line (2) Shamieh Calculus 2 October 4th, 2013 08:20 PM
Find an equation of the Tangent Line Shamieh Calculus 3 September 23rd, 2013 03:16 PM
Find the Slope of the tangent line to the... Shamieh Calculus 3 September 9th, 2013 09:28 AM
Find k such that the line is tangent to the function. LastXdeth Calculus 2 August 31st, 2011 05:16 AM





Copyright © 2017 My Math Forum. All rights reserved.