大师作文网matlab randn怎么写成分段的?
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matlab randn怎么写成分段的?
y1=0.4*randn(1,300)+5;
yy1=0.4*randn(1,300)+6;
如何在新函数中（0,300）中取值y1,(300,600)中取值yy1?
y1=0.4*randn(1,300)+5;
yy1=0.4*randn(1,300)+6;
如何在新函数中（0,300）中取值y1,(300,600)中取值yy1?
F=y1.*(x>=0 & x300 & x
再问： X怎么定义才对啊？下面这两种都报错 >> syms x >> F=y1.*(x>=0 & x300 & x sym.sym>notimplemented at 2514 Function 'ge' is not implemented for MuPAD symbolic objects. Error in ==> sym.sym>sym.ge at 814 notimplemented('ge'); >> x=0:600; >> F=y1.*(x>=0 & x300 & x=0 & x300 & x
再问： X怎么定义才对啊？下面这两种都报错 >> syms x >> F=y1.*(x>=0 & x300 & x sym.sym>notimplemented at 2514 Function 'ge' is not implemented for MuPAD symbolic objects. Error in ==> sym.sym>sym.ge at 814 notimplemented('ge'); >> x=0:600; >> F=y1.*(x>=0 & x300 & x=0 & x300 & x