Download App

RELATIONS AND FUNCTIONS — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsRELATIONS AND FUNCTIONS1 Mark
MCQ
Which one of the following function is not invertible?
  • A
    $\text{f} : \text{R} \rightarrow \text{R}, \text{f(x)} = 3\text{x} + 1$
  • B
    $\text{f} : \text{R} \rightarrow [0,\infty), \text{f(x)} = \text{x}^2$
  • C
    $\text{f} : \text{R}^+\rightarrow\text{R}^+, \text{f(x)} =\frac{1}{\text{x}^3}$
  • ✓
    None of these.
✓

Answer

Correct option: D.
None of these.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from RELATIONS AND FUNCTIONS→RELATIONS AND FUNCTIONS — all question types→Maths STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Let $T$ be the set of all triangles in the Euclidean plane, and let a relation $R$ on $T$ be defined as $\text{aRb}$ if a is congruent to $b \ \forall \ a, b \in T.$ Then $R$ is:
→
$A$ and $B$ are two given matrices such that the order of $A$ is $3×4$ , if $A’ B$ and $BA’$ are both defined then
→
The area of the region bounded by the curves $= xe^x, y = xe^{−x}$ and the line $x=1$ is:
→
Let f : Z → Z be given by $\text{f(x)}=\begin{cases}\frac{\text{x}}{2},&\text{if x is even}\\0,&\text{if x is odd}\end{cases}.$ Then, f is:
→
The area of circle $x^2+y^2=4$ is
→
If $A$ and $B$ are $3 × 3$ matrices and $| A | \ne 0$, then which of the following are true?
→
The distance of the point $(-3, 4, 5)$ from the origin:
→
Let $S$ be the set of all functions $f:[0,1] \rightarrow \mathrm{R}$ which are continuous on $[0,1]$ and differentiable on $(0,1) .$ Then for every $f$ in $\mathrm{S},$ there exists a $\mathrm{c} \in(0,1),$ depending on $f,$ such that
→
The corner points of the bounded feasible region are $(0,0),(2,0),(4,2),(2,4)$ and $\left(0, \frac{10}{3}\right)$

Then for the objective function $z=-x+2 y$

$(i)$ Maximum value of $z$ has at $\ldots \ldots \ldots . . .$

$(ii)$ Minimum value of $z$ has at $\ldots \ldots \ldots . . .$

$(iii)$ The maximum value of $z$ is $\ldots \ldots \ldots . . .$

$(iv)$ The minimum value of $z$ is $\ldots \ldots \ldots . . .$

→
If $\text{A}=\begin{bmatrix} 3 & 4 \\ 2 & 4 \end{bmatrix},\text{B}=\begin{bmatrix} -2 & -2 \\ 0 & -1 \end{bmatrix}$ then $(A + B)^{-1} =$
→