MATLAB提问,我想得到Y与X之间的关系!但求不出来,syms xa=sym('atan(0.000056041*exp(0.0991*x))')b=sym('0.2674*exp(0.169454*x)+0.7486')I=sym('((0.2674*exp(0.169454*x)+0.7486)*0.0066^3)/12+(0.0169*b*0.00066)')y=sym('(pi*465*0.0169*4.5./cos(
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![MATLAB提问,我想得到Y与X之间的关系!但求不出来,syms xa=sym('atan(0.000056041*exp(0.0991*x))')b=sym('0.2674*exp(0.169454*x)+0.7486')I=sym('((0.2674*exp(0.169454*x)+0.7486)*0.0066^3)/12+(0.0169*b*0.00066)')y=sym('(pi*465*0.0169*4.5./cos(](/uploads/image/z/14633180-44-0.jpg?t=MATLAB%E6%8F%90%E9%97%AE%2C%E6%88%91%E6%83%B3%E5%BE%97%E5%88%B0Y%E4%B8%8EX%E4%B9%8B%E9%97%B4%E7%9A%84%E5%85%B3%E7%B3%BB%21%E4%BD%86%E6%B1%82%E4%B8%8D%E5%87%BA%E6%9D%A5%2Csyms+xa%3Dsym%28%27atan%280.000056041%2Aexp%280.0991%2Ax%29%29%27%29b%3Dsym%28%270.2674%2Aexp%280.169454%2Ax%29%2B0.7486%27%29I%3Dsym%28%27%28%280.2674%2Aexp%280.169454%2Ax%29%2B0.7486%29%2A0.0066%5E3%29%2F12%2B%280.0169%2Ab%2A0.00066%29%27%29y%3Dsym%28%27%28pi%2A465%2A0.0169%2A4.5.%2Fcos%28)
MATLAB提问,我想得到Y与X之间的关系!但求不出来,syms xa=sym('atan(0.000056041*exp(0.0991*x))')b=sym('0.2674*exp(0.169454*x)+0.7486')I=sym('((0.2674*exp(0.169454*x)+0.7486)*0.0066^3)/12+(0.0169*b*0.00066)')y=sym('(pi*465*0.0169*4.5./cos(
MATLAB提问,我想得到Y与X之间的关系!但求不出来,
syms x
a=sym('atan(0.000056041*exp(0.0991*x))')
b=sym('0.2674*exp(0.169454*x)+0.7486')
I=sym('((0.2674*exp(0.169454*x)+0.7486)*0.0066^3)/12+(0.0169*b*0.00066)')
y=sym('(pi*465*0.0169*4.5./cos(a)).*((sin(a).*sin(a))./(8.1e10*I)+(cos(a).*cos(a))./(1.06e11*I))')
a =
atan(0.000056041*exp(0.0991*x))
b =
0.2674*exp(0.169454*x) + 0.7486
I =
0.000011154*b + 0.0000000064063692*exp(0.169454*x) + 0.0000000179349588
Error using ==> sym.sym>expression2ref at 2408
Error:'expression' expected [line 1,col 20]
Error in ==> sym.sym>char2ref at 2378
s = expression2ref(x);
Error in ==> sym.sym>tomupad at 2147
S = char2ref(x);
Error in ==> sym.sym>sym.sym at 102
S.s = tomupad(x,'');
MATLAB提问,我想得到Y与X之间的关系!但求不出来,syms xa=sym('atan(0.000056041*exp(0.0991*x))')b=sym('0.2674*exp(0.169454*x)+0.7486')I=sym('((0.2674*exp(0.169454*x)+0.7486)*0.0066^3)/12+(0.0169*b*0.00066)')y=sym('(pi*465*0.0169*4.5./cos(
syms x
a=atan(0.000056041*exp(0.0991*x))
b=0.2674*exp(0.169454*x)+0.7486
I=((0.2674*exp(0.169454*x)+0.7486)*0.0066^3)/12+(0.0169*b*0.00066)
y=(pi*465*0.0169*4.5./cos(a)).*((sin(a).*sin(a))./(8.1e10*I)+(cos(a).*cos(a))./(1.06e11*I))
y=simple(y)
x=-100:0.001:100;
y1=eval(y);
plot(x,y1)
不知道