[sin(x^2)sin(1/x)]/[ln(1+2x)]的极限(X趋向于0)
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[sin(x^2)sin(1/x)]/[ln(1+2x)]的极限(X趋向于0)[sin(x^2)sin(1/x)]/[ln(1+2x)]的极限(X趋向于0)[sin(x^2)sin(1/x)]/[ln
[sin(x^2)sin(1/x)]/[ln(1+2x)]的极限(X趋向于0)
[sin(x^2)sin(1/x)]/[ln(1+2x)]的极限(X趋向于0)
[sin(x^2)sin(1/x)]/[ln(1+2x)]的极限(X趋向于0)
此式是乘除一体的,所以可以用这个方法:sin(x^2)在X趋向于0时为x^2,sin(1/x)在X趋向于0时为sin(1/x)也是小于等于1大于等于-1;ln(1+2x)在X趋向于0时为2x;所以此式的极限为0
傅里叶级数作图f(x)=2sin[x] - sin[2x] + 2/3sin[3x] - 1/2sin[4x]我用mathematica输入程序Plot[{2sin[x],-2sin[x],2sin[x] - sin[2x],-2sin[x] + sin[2x],2sin[x] - sin[2x] + 2/3sin[3x],-2sin[x] + sin[2x] - 2/3sin[3x],2sin[x] - sin[2x] + 2/3si
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