HELP!! Use the 3-step definition of continuity to discuss the continuity (precalc problem) 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).

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)