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A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A function f is defined by f (x) = 2x - 5. Write down the values of:
(i) f (0) (ii) f (7) (iii) f (- 3)
Solution:
In mathematics, a function means a correspondence from one value x of the first set to another value y of the second set.
From the given function:
f(x) = 2x - 5
(i) f(0) = 2 x 0 - 5
= 0 - 5 = - 5
(ii) f(7) = 2 x 7 - 5
= 14 - 5 = 9
(iii) f(- 3) = 2 x (- 3) - 5
= - 6 - 5 = - 11
NCERT Solutions Class 11 Maths Chapter 2 Exercise 2.3 Question 3
A function f is defined by f(x) = 2x - 5. Write down the values of: (i) f (0) (ii) f (7) (iii) f (- 3)
Summary:
A function f is defined by f (x) = 2x - 5 is given. We have found that the f (0) = 2 × 0 - 5 = 0 - 5 = - 5, f (7) = 2 × 7 - 5 = 14 - 5 = 9 and f (- 3) = 2 × (- 3) - 5 = - 6 - 5 = - 11
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