Plot the point M (0,-6) in the coordinate plane

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 are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

What value of x is in the solution set of 4x – 12 s 16 + 8x?