3.6: Exponential simultaneous equations and a linear exponent equation

0606/22/O/N/21 — Question 5 · 9 marks

(a)
Solve the following simultaneous equations.
ex+ey=5\mathrm{e}^{x} + \mathrm{e}^{y} = 52ex3ey=82\mathrm{e}^{x} - 3\mathrm{e}^{y} = 8
[5]
(b)
Solve the equation e2t1=5e5t3\mathrm{e}^{2t - 1} = 5\mathrm{e}^{5t - 3}.
[4]