What is the variability of grades each week?

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).

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -