`f(x) = |x|+|x-1| +|x-2|`, then which one of the following is not correct ?

If f(x)=|x|+|x-1| , then which one of the following is correct?

If f(x)=|x|+|x-1| , then which one of the following is correct?

If f(x)=sin x,x in [-pi//2,pi//2] then which one of the following is not correct ?

If f(x)=2x^(3)-21x^(2)+36x-30 , then which one of the following is correct?

For x in N, x gt 1 , if P =log_(x)(x+1) and Q = log_(x+1) (x+2) then which one of the following is correct?

Consider the following function f:Rrarr R such that f(x) = x, if xge0 and f(x)=-x^(2) , if xlt0 then, which one of the following is correct?

Let f(x)=(x-1)/(x^(2)) then which of the following is correct?