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Erikhelp
Questions (4)
What is the value of tanx given that sinx+cosx=1/5 and π/2<x<π ?
1 answer
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Algebraically find the value of: 10 cot(cot^(-1)3+cot^(-1)7+cot^(-1)13+cot^(-1)21 )
2 answers
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Suppose f(t^2+1)=t^4+5t^2+3. What is f(t^2-1)?
2 answers
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Suppose f(f(x))=x for all x for which f(x) is defined and f(0)=2003. Find all the roots of the equation f(x)=0
1 answer
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Answers (1)
Thanks Steve, Could you please explain more on these two last steps: That means that f(t) = t(t+3)-1 So, f(t^2-1) = (t^2-1)((t^2-1)+3)-1 = t^4+t^2-3
