x=acos³x y=asin³t 求d²y/dx²

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 17:22:52
x=acos³x y=asin³t 求d²y/dx²
x)ML/VS64PM,̃JmlJ-+S* ,"}5ِiFeBBEnEBBeFEf1Xieq8#-U%P[3]%Z A.\DgE-H*`"p1u`Ϧ|y_lv';־ڥ/W-y/'?lB |Sfi_\g DW

x=acos³x y=asin³t 求d²y/dx²
x=acos³x y=asin³t 求d²y/dx²

x=acos³x y=asin³t 求d²y/dx²
d²y/dx²=(y``x`-x``y`)/(x`)^3
y`=3a(sint)^2*cost
y``=6asint*(cost)^2-3a(sint)^3
x`=-3a(cost)^2*sint
x``=6acost*(sint)^2-3a(cost)^3
d²y/dx²=1/(3asint*(cost)^2)
(方法是这样,中间步骤不知道有没有算错)