How do I do the dot product with vectors?
You multiply the terms of each vector that have the same unit vector (e.g. i, j, k). For example, you multiply the i terms in the first vector by the i terms in the second vector. When you've multiplied them the answer will be a scalar (it doesn't have any vector terms like i, j, k).
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All answers ▸If the probability of picking a red ball out of bag A is 2/5 and the probability of picking a red ball out of bag B is 3/7, what is the chance that you will pick exactly 2 red balls if you pick 2 balls from A and 1 ball from B? The balls are not replaced.
Could you please go through an example question where you have to solve quadratic simultaneous equations?
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