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Definition of Functions

x fx 1 1 ...

Question

$x$ $f (x)$
$1$ $1$
$2$ $3$
$3$ $5$
$4$ $7$
$5$ $9$
$6$ $11$
For the function in the table above,
If $f (2) = b$ , then find $f (2 b)$ .

A

11

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B

12

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C

13

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D

14

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Solution

The correct option is D 11
$f (2) = 3 = b$
$f (2 b) = f (6) = 11$

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Similar questions

$x$	$f (x)$
$1$	$1$
$2$	$3$
$3$	$5$
$4$	$7$
$5$	$9$
$6$	$11$

For the function in the table above, calculate

f (3)

.

Q. Sketch frequency polygon for the following table:

$x$	$1 - 3$	$3 - 5$	$5 - 7$	$7 - 9$	$9 - 11$	$11 - 13$
frequency	$2$	$1$	$4$	$2$	$3$	$6$

Q. Find the median for the following data.

x	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$
f	$9$	$11$	$5$	$6$	$8$	$1$	$3$	$7$

Q. Study the following pattern:

1 + 3 = 2 × 2
1 + 3 + 5 = 3 × 3
1 + 3 + 5 + 7 = 4 × 4
1 + 3 + 5 + 7 + 9 = 5 × 5

By observing the above pattern, find

(i) 1 + 3 + 5 + 7 + 9 + 11
(ii) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15
(iii) 21 + 23 + 25 + ........ + 51

Q. The following data represent the number of hours of playing per week (

X

25

3, 4, 6, 1, 2, 6, 6, 4, 3, 1, 3, 6, 7, 8, 1, 5, 8, 9, 5, 9, 4, 3, 7, 1, 7

.
Picture the following data into ungrouped frequency table.

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