equation of tangent line

[mxrie]

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?


Thanks in advance

 

[Harry_the_cat]

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.