IIT JEE , AIEEE Forum - Mathematics , Differential Calculus

sathya_crazyteen

find the period of the following

1.period of fn sin(2 pi t +pi/3)+2 sin 3 pi t+pi/4)+3 sin 5 pi t is

a)1

b)2

c)pi

d)2 pi

2.period of sin^4x+cos^4 x is

a )pi/2

b)3 pi/2

c)pi

d)2 pi

3.tan^-1(tan x) is

a)pi/2

b)pi

c)2 pi

d)none

taruntanuj007

Q2 the answer is pi/2 u can check it out basicaly here u put the values or else find individual timeperiods and then LCM

Q3 arctan (tanx) has a period pi here u draw the graph it wil be a zigzig curve

akku

hi
q1)pd=2
q2)pd=pi/2
q3)pd=pi