题库网
#4bea36f6-5579-4b2b-9a73-7264e95e05d1中等fill_compute导数与切线导数

29.(2023•浙江开学)已知曲线y=eaxy=e^{ax}y=1alnxy=\frac{1}{a}lnx的两条公切线的夹角正切值为34\frac{3}{4},则a3=a^{3}=___2e3\frac{2}{{e}^3}___.