Question
Let f be the function defined by f(x)= \ array cc x^2-1 x^2-2|x-1|-1 , & x 1 \\ 1 2 , & x=1 array .
Let f be the function defined by f(x)= \ array cc x^2-1 x^2-2|x-1|-1 , & x 1 \\ 1 2 , & x=1 array .
D. The function is not continuous at x=1
f(x)= \ array cc x^2-1 x^2-2 x+1 ; & x 1 \\ 1 2 ; & x=1 \\ x^2-1 x^2+2 x-3 ; & x 1 array . x^2+3 x-x-3 =x(x+3)-1(x+3) Lets Find LHL, _ x 1^ - x^2-1 x^2-2 x+1 and RHL, _ x 1^ + x^2-1 x^2+2 x-3 aligned & _ x 1^ - (x-1)(x+1) (x-1)^2 _ x 1^ + (x-1)(x+1) (x+3)(x-1) \\ & _ x 1^ - x+1 x-1 = _ x 1^ + x+1 x+3 = 2 4 = 1 2 aligned LHL f(1) f(x) is not continuous at x=1
Related: Mathematics — Continuity and Differentiability · All PYQ Banks