[MATLAB基础] 询问下一个matlab求一阶导数的问题

[mathjiang]

>>pretty(foverd)

/ theta theta (d - 1) (theta - 1) \
a w | ----------- + ------------------------- |
| d - d theta 2 |
\ (d - d theta) /
----------------------------------------------- +
theta
b - 1 -----
--------- b - 1
b - theta / d (theta - 1) \
w | ------------- |
\ theta /

/ / theta (d - 1) \ \
a (theta - 1) | c - w | ------------- + 1 | |
\ \ d - d theta / /
---------------------------------------------
theta
b - 1 ----- + 1
--------- b - 1
b - theta / d (theta - 1) \
w (b - 1) | ------------- |
\ theta /