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got stuck on a vector problem i encountered and would greatly appreciate some help; decide what t is so that the angle between u = (-1,t) and v = (1,1) becomes pi/3. I know that cos(pi/3) = 1/2...

sui mother buys some share of A on day 0 On day 7 share price of A is $44.6. If she sells all shares of A and buy 2000 share of B on day 7 should recieved $7400. On day 12 share price of A is $4.8...

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