A pair of equations is shown below:
y = 8x β 9
y = 4x β 1
Part A: Explain how you...
Mathematics, 09.06.2020 20:57 cbittlelindseypbbml5
A pair of equations is shown below:
y = 8x β 9
y = 4x β 1
Part A: Explain how you will solve the pair of equations by substitution or elimination. Show all the steps and write the solution.
Part B: If the two equations are graphed, at what point will the lines representing the two equations intersect? Explain your answer
Answers: 2
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Prove (a) cosh2(x) β sinh2(x) = 1 and (b) 1 β tanh 2(x) = sech 2(x). solution (a) cosh2(x) β sinh2(x) = ex + eβx 2 2 β 2 = e2x + 2 + eβ2x 4 β = 4 = . (b) we start with the identity proved in part (a): cosh2(x) β sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 β sinh2(x) cosh2(x) = 1 or 1 β tanh 2(x) = .
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What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.
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