In which of the following function is onto : - Vidyadip

Question

In which of the following function is onto :

✓

Answer

(C) $f: R _0 \rightarrow R ^{+}, \quad f(x)=|x|$
$\because$ Every positive real number has exist the pre-image in domain $R _0$.

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→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

If $y=5 \cos x-3 \sin x$, then $\frac{d^2 y}{d x^2}$ is equal to

The tangent to the curve $y = e^{2x}$ at the point $(0, 1)$ meets $x-$axis at:

What are the direction ratios of normal to the plane 2x - y + 2z + 1 = 0:

(2, -1, 2)
$\big(1,\frac{1}{2},1\big)$
(1, -2, 1)
None of the above

Out of the given matrices, choose that matrix which is a scalar matrix:

$\begin{bmatrix}0&0\\0&0\end{bmatrix}$
$\begin{bmatrix}0&0&0\\0&0&0\end{bmatrix}$
$\begin{bmatrix}0&0\\0&0\\0&0\end{bmatrix}$
$\begin{bmatrix}0\\0\\0\end{bmatrix}$

The eqution of the plane which cute equal intercepts of unit length on the coordinate axes is:

If $\sin^{-1}\text{x}-\cos^{-1}\text{x}=\frac{\pi}{6},$ then x =

$\frac{1}{2}$
$\frac{\sqrt3}{2}$
$-\frac{1}{2}$
$\text{none of these}$

If $A=\left[\begin{array}{rr}\cos \alpha & -\sin \alpha \\ \sin \alpha & \cos \alpha\end{array}\right]$, then for what value of $\alpha, A$ is an identity matrix?

Which of these is equal to $\int x e^{x^2} d x$, where $C$ is the constant of integration?

If A and B are two events, then $\text{P}(\overline{\text{A}}\cap\text{B})=$

$\text{P}(\overline{\text{A}})\text{ P}(\overline{\text{B}})$
$1-\text{P}(\text{A})-\text{P}(\text{B})$
$\text{P}(\text{A})+\text{P}(\text{B})-\text{P}(\text{A}\cap\text{B})$
$\text{P}(\text{B})-\text{P}(\text{A}\cap\text{B})$

What is the length of the longer diagonal of the parallelogram constructed on $5\vec{\text{a}}+2\vec{\text{b}}$ and $\vec{\text{a}}-3\vec{\text{b}}$ if it is given that $|\vec{\text{a}}|=2\sqrt{2},\big|\vec{\text{b}}\big|=3$ and the angle between $\vec{\text{a}}$ and $\vec{\text{b}}$ is $\frac{\pi}{4}$?

$15$
$\sqrt{113}$
$\sqrt{593}$
$\sqrt{369}$