Question

Seja f(X,y)=ln(X+y-1) estime f(1,1)

Answer 1

Olá!

$\\ \mathsf{f(x, y) = \ln (x + y - 1)} \\\\ \mathsf{f(1, 1) = \ln (1 + 1 - 1)} \\\\ \mathsf{f(1, 1) = \ln 1} \\\\ \boxed{\mathsf{f(1, 1) = 0}}$