∫ cos(pi/x^5)/x^6=?

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∫cos(pi/x^5)/x^6=?∫cos(pi/x^5)/x^6=?∫cos(pi/x^5)/x^6=?∫cos(π/x^5)/x^6dx=-1/(5π)·∫cos(π/x^5)d(π/x^5)=

∫ cos(pi/x^5)/x^6=?
∫ cos(pi/x^5)/x^6=?

∫ cos(pi/x^5)/x^6=?

∫cos(π/x^5)/x^6dx
=-1/(5π)·∫cos(π/x^5)d(π/x^5)
=-1/(5π)·sin(π/x^5)+C

∫ cos(π/x^5)dx/x^6
=-1/5*∫ cos(π/x^5)d(1/x^5)
=-1/(5π)∫ cos(π/x^5)d(π/x^5)
=-1/(5π)∫dsin(π/x^5)
=-sin(π/x^5)/(5π)+C