First slide

Introduction to real valued functions

Question

The range of the function $\cos (π [x])$ is

Easy

A

$(- 1, 1)$
B

$[- 1, 1]$
C

${- 1, 1}$
D

${0}$

Solution

$[x] = n ∈Z ,so cos [x] π =cos nπ =1 , if n is even = - 1, i f n i s o d d R ange = {- 1, 1}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App