Geometry homework. please help if your good at geometry! it has to do with probability, it’s in the pic

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 a rational number between 9.5 and 9.7

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*