hello, i have task Z= y*cos*(x-y) in point T (π; π/2; ?) .....is this derivation all right?
Z´x = y*sin*(x-y)/T1= - π/2*sin*( π- π/2) = - π/2
Z´y = y*sin*(x-y) + cos*(x-y)/T1 = π/2 * sin*( π – π/2) + cos*( π – π/2) = π/2
Z0 = π/2*cos*(2 π – π) = π/2*cos* π/2 = π/2
2
Could anyone help me please?
I have edited your post as I understand it, & re-done the mathematical statements in LaTeX.
From the title of the original post, I understand that you need to:
Find the equation of the tangent plane and normal to the surface:
at point T:
. Evaluated at point T, this is
. Evaluated at point T, this is
.....is this derivation all right?
Could anyone help me please?
because .
I'll get back to look at the rest, when I get a chance.
Good Luck!
This is the result:
http://www.sdilej.eu/pics/a76e874a0a...2d4a2ad52e.jpg
is it good?