If Sigma(x) = x+y+z what is Sigma (x3 -yz) ?
Sigma (x3 -yz)=x3+y3+z3-xy-yz-zx
Thanks Namitha. But can you please show the steps. Unfortunately I am not able to find it in any text books or websites
"Summation"[sigma] is the addition of a set of numbers; the result is their sum or total. The "numbers" to be summed may be natural numbers, complex numbers, matrices, or still more complicated objects
sigma(x3-yz)= x3-yz+y3-zx+z3-xy
= x3+y3+z3-xy-yz-zx