Please help, I have no idea what to do.

I know how to graph the first function, but I’m not sure how to find the second function in order to graph it. Any help is appreciated, thank you

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°