Figure A maps to figure B with a scale factor of 1 1/2.
What is the value of x?

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).

I’m stuck on this equation, anyone got the answer?

Bring the fraction a/a-4 to a denominator of 16-a^2