f(x)=xsin(10*pi*x)+2 x∈[-1,2],x=-1:0.1:2;y=x.*sin(10*pi.*x)+2;plot(x,y)用matlab画对吗?我一直不懂为什么定义符号运算 sym x;y=sym(x.*sin(10*pi.*x)+2)用matlab怎么老不出表达式?符号运算一直不大懂?
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![f(x)=xsin(10*pi*x)+2 x∈[-1,2],x=-1:0.1:2;y=x.*sin(10*pi.*x)+2;plot(x,y)用matlab画对吗?我一直不懂为什么定义符号运算 sym x;y=sym(x.*sin(10*pi.*x)+2)用matlab怎么老不出表达式?符号运算一直不大懂?](/uploads/image/z/2685863-47-3.jpg?t=f%28x%29%3Dxsin%2810%2Api%2Ax%29%2B2+x%E2%88%88%5B-1%2C2%5D%2Cx%3D-1%3A0.1%3A2%3By%3Dx.%2Asin%2810%2Api.%2Ax%29%2B2%3Bplot%28x%2Cy%29%E7%94%A8matlab%E7%94%BB%E5%AF%B9%E5%90%97%3F%E6%88%91%E4%B8%80%E7%9B%B4%E4%B8%8D%E6%87%82%E4%B8%BA%E4%BB%80%E4%B9%88%E5%AE%9A%E4%B9%89%E7%AC%A6%E5%8F%B7%E8%BF%90%E7%AE%97+sym+x%3By%3Dsym%28x.%2Asin%2810%2Api.%2Ax%29%2B2%29%E7%94%A8matlab%E6%80%8E%E4%B9%88%E8%80%81%E4%B8%8D%E5%87%BA%E8%A1%A8%E8%BE%BE%E5%BC%8F%3F%E7%AC%A6%E5%8F%B7%E8%BF%90%E7%AE%97%E4%B8%80%E7%9B%B4%E4%B8%8D%E5%A4%A7%E6%87%82%3F)
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