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Find , when

If x = a sin 2t (1 + cos 2t) and y = b cos 2t (1 – cos 2t), show that at

Find , when

If x = cos t (3 – 2 cos² t) and y = sin t (3 – 2 sin² t) find the value of at

Find , when

If x = 3 sin t – sin 3t, y = 3 cost – cos 3t, find at

Find , when

If find