DOES ANYBODY KNOW THESE MATH QUESTIONS PLPS HELP

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).

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "