x+y=4
{
xβy=β6
Mathematics, 26.08.2019 13:30 minecrafter3882
Which ordered pair is the solution to the system of equations?
x+y=4
{
xβy=β6
options:
(β2, 4)
(2, 2)
(β1, 5)
(1, β7)
Answers: 1
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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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You know the right answer?
Which ordered pair is the solution to the system of equations?
x+y=4
{
xβy=β6
x+y=4
{
xβy=β6
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