Question

dada f(x,y) = 2x* ln(x²+ y²), assinale a alternativa correta
A) f(1,0)= 8
B) f(1,0)= e
C) f(1,0)= 2
D) f(1,0)= ln1
E) f(1,0)= 0

Answer 1

Olá


f(x,y) = 2x.ln(x² + y²)


Basta substituir no ponto (1,0)

x = 1
y = 0


f(1,0) = 2.1.ln(1² + 0²)

f(1,0) = 2.ln(1)


ln(1) = 0


f(1,0) = 2.0

f(1,0) = 0                             ←                     Letra E)