Ah so this function is linear? I looked online and it showed linear multivariable functions have the form f(x1,x2,x3,...) = a1x1 + a2x2 + a3x3 + ... So I didn't want to call this type of function linear since it does not have this form. By similar I mean it looks like z = (1+y)(A+Bx). Sorry...
Homework Statement
Ok this isn't really homework just something I came across and am confused by. I came across a function that looks similar to z = xy and I found that delta_z / delta_x = dz/dx which is really weird to me. This was really strange to me so I checked to see if z = x²y would...