Q19Short answer
Show that the function f (x) = sin x + cos x is continuous at x = π. Examine the differentiability of f, where f is defined by x[ x], , if 0 ≤ x < 2
Show that the function f (x) = sin x + cos x is continuous at x = π. Examine the differentiability of f, where f is defined by x[ x], , if 0 ≤ x < 2