问题描述:
一个关于Matlab编程的问题 s=sym('x')与s=sym(x)有什么区别
RT 最好能讲的明白一点
同时还有一个问题
那位大哥能帮我解释一下这段代码
>> clear
>> f='3*x-7'
f =
3*x-7
>> g='9*x+8'
g =
9*x+8
>> f+g
ans =
108 84 240 88 111
>> f*g
Error using ==> mtimes
Inner matrix dimensions must agree.
>> f.*g
ans =
2907 1764 14400 1935 3080
>> clear
>> f='3*x-7'
f =
3*x-7
>> g='2*a-9'
g =
2*a-9
>> f+g
ans =
101 84 217 90 112
>> m='4+x^3-7'
m =
4+x^3-7
>> f+m
Error using ==> plus
Matrix dimensions must agree.
RT 最好能讲的明白一点
同时还有一个问题
那位大哥能帮我解释一下这段代码
>> clear
>> f='3*x-7'
f =
3*x-7
>> g='9*x+8'
g =
9*x+8
>> f+g
ans =
108 84 240 88 111
>> f*g
Error using ==> mtimes
Inner matrix dimensions must agree.
>> f.*g
ans =
2907 1764 14400 1935 3080
>> clear
>> f='3*x-7'
f =
3*x-7
>> g='2*a-9'
g =
2*a-9
>> f+g
ans =
101 84 217 90 112
>> m='4+x^3-7'
m =
4+x^3-7
>> f+m
Error using ==> plus
Matrix dimensions must agree.
问题解答:
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