MTH202 Quiz 2 by Iqra Azhar

from all x belonging to X.Then ___________ . identity function

Let A be a set with m elements and B be a set with n elements then the number of elements inA×Bare

m⋅n.

well defined?Select the correct option

f is not defined for 5 and -5."

If f(x)=sin−1(x) and g(x)=sinx then gof(x) is..............Select the correct option X

Which of the following logical connective is not a binary operation?

"negation" or "NOT" operation.

Consider a function f defined on X = {1, 2, 3, 4} by f (1) = 1, f (2) = 2, f (3) = 3 and f (4) = 4 then

f is an identity function.

A function f:R+→R defined by f(x)=log(x) is a real valued function .Select the correct option False True " True"

Let f:R→R is one to one function then c.f,c≠0 is also one to one function True False The statement is false.

Composition of a function is a commutative operation. T F The statement is false

Letf(x)=2xand g(x)=x+2definefunctionsfandgfromRtoR,then(f−g)(x)is__

x−2

which of the following is the reason for a function f(x)=x2 for all x∈Z for being 'f' not one-to-one?

because range is not equal to co domain. because range is equal to co domain. because two different elements of domain are mapped onto the same element of range