Question

qual o lim de raiz quadrada de 2^2-2x-3 quando x tende a 5

Answer 1

lim (2 ^2 - 2x - 3 )^1/2 = lim ( 4 - 3 - 2x )^1/2 = lim ( 1 + 2x )^1/2 = ( 11 )^1/2
x-->5                              x-->5                            x-->5