Question 27 of 105

Out of the following functions representing 

motion of a particle which represents SHM

I. y=sin ωt-cos ωt

II. y=sin3ωt

III. y=5 cos3π4-3ωt

IV. y=1+ωt+ω2t2

(a) Only (IV) does not represent SHM

(b) (I) and (III)

(c) (I) and (II)

(d) Only (I)