sin(sinx)的高阶导数的求法
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一阶：cos(sin(x))*cos(x)
二阶：- sin(sin(x))*cos(x)^2 - cos(sin(x))*sin(x)
三阶：3*sin(sin(x))*cos(x)*sin(x) - cos(sin(x))*cos(x)^3 - cos(sin(x))*cos(x)
四阶：cos(sin(x))*sin(x) - 3*sin(sin(x))*sin(x)^2 + 4*sin(sin(x))*cos(x)^2 + sin(sin(x))*cos(x)^4 + 6*cos(sin(x))*cos(x)^2*sin(x)
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二阶：- sin(sin(x))*cos(x)^2 - cos(sin(x))*sin(x)
三阶：3*sin(sin(x))*cos(x)*sin(x) - cos(sin(x))*cos(x)^3 - cos(sin(x))*cos(x)
四阶：cos(sin(x))*sin(x) - 3*sin(sin(x))*sin(x)^2 + 4*sin(sin(x))*cos(x)^2 + sin(sin(x))*cos(x)^4 + 6*cos(sin(x))*cos(x)^2*sin(x)
不知道你想要几阶
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