Question
Which of the following relations are functions? If it is a function determine its domain and range.
{(2, 1), (3, 1), (5, 2)}
✓
Answer
{(2, 1), (3, 1), (5, 2)}
Every element of set A has been assigned a unique element in set B.
∴ Given relation is a function.
Domain = {2, 3, 5}, Range = {1, 2}
Every element of set A has been assigned a unique element in set B.
∴ Given relation is a function.
Domain = {2, 3, 5}, Range = {1, 2}
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write the number of points of intersection of the curves $2\text{y}=-1$ and $\text{y = cosec x}.$
→Evaluate the following limit:
$\lim\limits_{\text{x}\rightarrow2}\frac{\text{x}^3-8}{\text{x}^2-4}$
→$\lim\limits_{\text{x}\rightarrow2}\frac{\text{x}^3-8}{\text{x}^2-4}$
For the G.P.
→If $r=-3$ and $t_6=1701$, find $a$.
Write the $50^{th}$ term of the series $2 + 3 + 6 + 11 + 18 + ....$
→Write the argument of $(1+\text{i}\sqrt{3})(1+\text{i})(\cos\theta+\text{i}\sin\theta).$
→Are the following pairs of statements are negation of each other:
The number x is not a rational number.
The number x is an irrational number.
The number x is not a rational number.
The number x is an irrational number.
Write the quadration the arithmetic and geometric means of whose roots are A and G respectively.
If $\mathrm{f}(\mathrm{x})=\left\{\begin{array}{cc}4 x-2, & x \leq-3 \\ 5, & -3<x<3 \\ x^2, & x \geq 3\end{array}\right.$, then find
→$f(5)$
Write the coordinates of the orthocentre of the triangle formed by the lines $x^2-y^2=0$ and $x+6 y=18$.
→If ω is the complex cube root of unity, find the value of
→$\omega^2+\omega^3+\omega^4$