Hi need help with math
some one help

Question and answers are in the attached picture. you so much in advance.

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).

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !