mathematica的一个问题
u,q1,q2,z都知道,算是常量,p1,p2是变量,我要把f对p1,p2求偏导,刚输入完f就出错了,求大神!图片传不上,程序是p1=.;p2=.;f[p1_,p2_]=...
u,q1,q2,z都知道,算是常量,p1,p2是变量,我要把f对p1,p2求偏导,刚输入完f就出错了,求大神!
图片传不上,程序是
p1 =.;
p2 =.;
f[p1_, p2_] = (u*u*[p1*(q2 - q1) + p2*(z - q2)])/(2*z - p2*u^2) + v +
1/2*[((u*[p1*(q2 - q1) + p2*(z - q2)])/(2*z - p2*u^2))]^2
错误信息是Syntax::sntxf: "u*u*" cannot be followed by "[p1*(q2-q1)+p2*(z-q2)]".
"[p1*(q2-q1)+p2*(z-q2)]" is incomplete; more input is needed.
Incomplete expression; more input is needed . 展开
图片传不上,程序是
p1 =.;
p2 =.;
f[p1_, p2_] = (u*u*[p1*(q2 - q1) + p2*(z - q2)])/(2*z - p2*u^2) + v +
1/2*[((u*[p1*(q2 - q1) + p2*(z - q2)])/(2*z - p2*u^2))]^2
错误信息是Syntax::sntxf: "u*u*" cannot be followed by "[p1*(q2-q1)+p2*(z-q2)]".
"[p1*(q2-q1)+p2*(z-q2)]" is incomplete; more input is needed.
Incomplete expression; more input is needed . 展开
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