
Calculus Calculus Math Forum 
 LinkBack  Thread Tools  Display Modes 
May 9th, 2017, 11:54 AM  #1 
Member Joined: Feb 2017 From: henderson Posts: 36 Thanks: 0  I dont understand how this is the answer deriative
tan^2(2+3x) I have no clue how they get (6tan)(2+3x)(cos^2)(2+3x) I used chain and what I got is 6sec^2(2+3x) 
May 9th, 2017, 12:05 PM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,963 Thanks: 1148 Math Focus: Elementary mathematics and beyond 
$$(\tan^2(2+3x))'=2\cdot\tan(2+3x)\cdot\sec^2(2+3x )\cdot3$$ Does that help? 
May 9th, 2017, 12:55 PM  #3 
Member Joined: Feb 2017 From: henderson Posts: 36 Thanks: 0  
May 9th, 2017, 01:01 PM  #4 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,963 Thanks: 1148 Math Focus: Elementary mathematics and beyond 
Do you know what $\sec(x)$ is in terms of $\cos(x)$?


Tags 
answer, deriative, understand 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
I dont understand this qn!  Ter  Algebra  4  October 6th, 2012 09:54 PM 
I dont understand this answer to this derivative...  RealMadrid  Calculus  1  July 4th, 2012 06:26 PM 
I dont understand radical expression answer....  RealMadrid  Algebra  3  April 25th, 2012 09:31 AM 
Exponential equation...I dont understand the answer...  RealMadrid  Algebra  3  April 10th, 2012 06:19 AM 
I just dont understand  chisolm01  Algebra  0  July 26th, 2008 07:09 AM 