Given that f: R → R be defined asFor f(-1):f(x) = 3x⇒ f(-1) = -3For f(2):f(x) = x2⇒ f(2) = 4For f(4):f(x) = 2x⇒ f(4) = 8f(–1) + f(2) + f(4) = -3 + 4 + 8⇒ f(–1) + f(2) + f(4) = 9

Q. 515.0( 1 Vote )

Mark the correct A. 9

B. 14

C. 5

D. none of these

Class 12th RD Sharma - Volume 1 2. Functions

Answer :

Given that f: R → R be defined as

For f(-1):

f(x) = 3x

⇒ f(-1) = -3

For f(2):

f(x) = x²

⇒ f(2) = 4

For f(4):

f(x) = 2x

⇒ f(4) = 8

f(–1) + f(2) + f(4) = -3 + 4 + 8

⇒ f(–1) + f(2) + f(4) = 9

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Mark the correct A. 9B. 14C. 5D. none of these

Mark the correct A. 9

B. 14

C. 5

D. none of these