The real-valued function $f(x) = \frac{\operatorname{cosec}^{-1} x}{\sqrt{x - [x]}}$,where $[x]$ denotes the greatest integer less than or equal to $x$,is defined for all $x$ belonging to:

  • A
    all reals except integers
  • B
    all non-integers except the interval $[-1, 1]$
  • C
    all integers except $0, -1, 1$
  • D
    all reals except the interval $[-1, 1]$

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Let $f(x) = \frac{x^2-6x+5}{x^2-5x+6}$. Match the conditions / expressions in Column $I$ with statements in Column $II$.
Column $I$Column $II$
$(A)$ If $-1 < x < 1$,then $f(x)$ satisfies$(p)$ $0 < f(x) < 1$
$(B)$ If $1 < x < 2$,then $f(x)$ satisfies$(q)$ $f(x) < 0$
$(C)$ If $3 < x < 5$,then $f(x)$ satisfies$(r)$ $f(x) > 0$
$(D)$ If $x > 5$,then $f(x)$ satisfies$(s)$ $f(x) < 1$

If the range of the function $f(x) = -3x - 3$ is $\{3, -6, -9, -18\}$,then which of the following elements is not in the domain of $f$?

The range of the function $f(x) = -\sqrt{-x^2-6x-5}$ is

What is the range of values for $\frac{x}{x^2 + 4}$ for all real values of $x$?

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If $f(x)=\sqrt{2-x^2}$ and $g(x)=\ln (1-x)$ are two real-valued functions,then the domain of the function $(f+g)(x)$ is

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