2) zero. a) Determine which integrals would evaluate to be zero and provide the reason that they would be zero or not T/2 2 cos(9w,t) dt -T/2 T/2 b) 2 cos(9w,t) cos(9w₁t) dt T/2 c) cos(7w,t) cos(6w,t) dt T/2 T/2 d) cos(6w,t) sin(6w,t) dt

Ques. 7: Simplify the following: (a) [e-tcos(3t – 60°)]8(t) (b) 8(t + 3)e-t

Find the value of the given integral. 0+ So (-2e-3tu(t) + 96(t))dt The value of the given integral is

Which of the following mathematical expressions has the numerical value 2 for its solution? 2 a juc fu(t-1) 0 b foce- 0 d C juce-1) с 8(t-1)-8(t - 3) 0 u(t − 1) – u(t − 3) Ju(t – 1) 0