1.0.0.2 解答

(1) $2\pi a$     (2) $a\left(\sinh\dfrac{t_2}{a} -\sinh\dfrac{t_1}{a}\right)$    (3) $\sqrt{2}$    (4) $2\sqrt{13}$     (5) $e-1/e$    (6) $\dfrac{\sqrt{5}}{2} +\log\left(\dfrac{3+\sqrt{5}}{2}\right)$     (7) $\log\left(2+\sqrt{3} \right)$     (8) $-\dfrac{3}{4}+\log 7$    (9) $2\sinh 1$     (10) $\sqrt{2}(e^2-1)$