d d Calculate yri(t) • r2(t)] and [ri(t) x r2(t)] first by differentiating dt at! the product directly and then by apply

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D D Calculate Yri T R2 T And Ri T X R2 T First By Differentiating Dt At The Product Directly And Then By Apply 1 (40.91 KiB) Viewed 25 times

d d Calculate yri(t) • r2(t)] and [ri(t) x r2(t)] first by differentiating dt at! the product directly and then by applying the formulas d dr2 dri [rı(t). r2(t)] = ri(t). + r2(t) and dt dt dt d dr2 dri at! [rı(t) x r2(t)] = ri(t) + x r2(t). dt dt = ri(t) = cos(t)i + sin(t)j + 5tk, r2(t) = 4i + tk = = as t) = 1 d [rı(t). r2(t)] dt = d the (x ( [rı(t) x r2(t)) = х dt