If y=x²+2x+1/x²+2x+7, then inverse function x is defined only when

if f: [0, ∞)→R defined by f(x)=x², then f is

If f:[0, ∞)→[0, ∞) defined by f(x)=x², then f is

The domain of Sin^-1 log2 (x²/2) is

The domain of √3+x + √3-x/x is

If f(x)=1/2[3^x+3^-x], g(x)=1/2[3^x-3^-x], then f(x) g(y)+f(y)g(x)=

The domain of log₁₀ (x³-x) is

The domain of 1/√[x]²-[x]-6 is

Let f be an injective function with domain{x, y ,z} and range {1,2,3}such that exactly one of the  following statements is correct and the remaining are false.

F(x)=1, f(y)≠1, f(z)≠2. The value of f¹(1) is

log (x+√x²+1)/x is