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How many electrons does sodium have in its outer shell? If the set of real roots of the function f(x) is {-7,-5,1}, find the set of real roots of: f(−4x)
f(x2)
f(x3+1)? The amplitude of the graph below is *blank* units? Is it true that since sin^2x+cos^2x = 1, then sin(x)+cos(x) = 1? Explain your answer.? Where is the signoff?