equation of tangent line

mxrie

New member
Joined
Aug 12, 2018
Messages
5
Hello!

“Find the equation of the tangent line and normal line to the graph of f(x)=2xcosx at the point where x=pi.”

Is my answer correct? Am I doing the right process?
5CCED4F3-ECDC-42B0-B183-93345701C2D9.jpg

Thanks in advance :)
 

Harry_the_cat

Full Member
Joined
Mar 16, 2016
Messages
943
Hello!

“Find the equation of the tangent line and normal line to the graph of f(x)=2xcosx at the point where x=pi.”

Is my answer correct? Am I doing the right process?
View attachment 11075

Thanks in advance :)
Looks good to me.

The equation of a line is usually expressed in standard form ax+by =c or gradient/intercept form y= mx+c. So you might want to "tidy up" your answers.
 
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