Hi all, I'm stuck on this differential calculus question and would really appreciate some help...

Find the equation of the tangent plane to he surface

z = cos(x+y) + 1 at (0,0,2)

Thanks,

rorosingsong

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- Apr 9th 2011, 03:10 AMrorosingsongFinding the equation of a tangent plane to a surface.
Hi all, I'm stuck on this differential calculus question and would really appreciate some help...

Find the equation of the tangent plane to he surface

z = cos(x+y) + 1 at (0,0,2)

Thanks,

rorosingsong - Apr 9th 2011, 04:23 AMPlato
All you have done is state a problem. Please either post some of your own work on these problems or explain what you do not understand about the question.

If $\displaystyle F(x,y,z)=\cos(x+y)-z+1$ then what is $\displaystyle \nabla F~?$

What has that to do with this problem?