- In a group of 5 people, in how many different ways could they be friends?

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What will happen when nibiru comes? Given f(x)=7x^2-3 and g(x)=1-2x find f(g(x)).? Which substance could you use to demonstrate "morphing" ? Are these substances fluids? For each explain your answer.? Suppose that A ⊆ B ⊆ V .
(a) Prove that span(A) ⊆ span(B).
(b) Prove that if B is linearly independent then A is linearly independent.? Electrical Engineering MSEE/PhD Advice?