Compute ∫cos(x)-\frac {3}{x4}dx.
(a) sin(x)+\frac {3}{4}x^-7+c
(b) sec(x)+\frac {3}{4}x^-3+c
(c) sin(x)+\frac {3}{4}x^-3
(d) sin(x)+\frac {3}{4}x^-3+c
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This interesting question is from Definite Integral in portion Integrals of Mathematics – Class 12