M mxrie New member Joined Aug 12, 2018 Messages 5 Feb 17, 2019 #1 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

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

H Harry_the_cat Senior Member Joined Mar 16, 2016 Messages 1,238 Feb 17, 2019 #2 mxrie said: 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 Click to expand... 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.

mxrie said: 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 Click to expand... 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.