Question

The function f(x) = [x] where [x] denotes the greatest integer function is continuous at
a) 4 b)-2 c) 1 d) 1.5

Answer 1

Answer:

tex] \begin{lgathered}\tt \implies \: (25 - x) {}^{2} = (x) {}^{2} + (5) {}^{2} \\ \tt \implies625 - 50 + x {}^{2} = x {}^{2} + 25 \\ \tt \implies - 50x