Plot[( -((0.00136053 Cosh[0.0923534 t]^2)/Sinh[0.0923534 t]^(4/3)) + 0.00408158 Sinh[0.0923534 t]^(2/3))/((0.717817 Sinh[0.0923534 t]^(2/3))^2), {t, 0, 100}]