jAx)-g'(x)dx = /(r)-g(r) - \f{x)-g{x)dx
a) Jr2 cos r<ir =
= x2 sin.r - J 2.r sinrrfr
f(x) = X2 f(x) = 2x
g'(x) = cosx g(x) = sin.r
1=2 Jr sinratr =
= -2.r cosr + 21 cosxdx
Ax) = x /Cr) = 1 g (r) = sin.r g(x) = -cosx
-2rcosr + 2sinr
jr2 cosxdx = x2 sin.r - (-2rcosr + 2 sinr) = r2 sin.r + 2rcosr - 2 sin.r + C c) j(r3 + 2r - l)exdx =^x3exdx + j2xexdx - Jexdx
~v~
K
L M
/(r) = r3 /(r) = 3r2 g(x) = ex g(x) = ex
f(x) = x2 f(x) = 2x g'(x) = ex g(x) = ex x3ex - 3x2ex + 6xex - 6ex
/(r) = 2r /(r) = 2 g’(x) = ex g(x) = ex
2xex - 2ex M = | exdx = ex
j(r3 + 2r - 1 )exdx = x3ex - 3x2ex + 6xex - 6ex + 2xex - 2ex - ex = x3ex - 3x2ex + Sxex - 9ex = (r3 - 3r2 + 8r - 9)ex
Ax) = ln2r /(r) = 21nr4 g'(4 = 1 g(x) = x
/(r) = lnr /(r) = | g' (x) = 1 g(r) = x
K = |x3exdx =
x3ex - 3
L = |2xexdx =
g) | ln2.r<ir = J \ \a2xdx =
rln2r -2 J \nxdx = r ln2r - 2 rln2r - Zr lnr + Zr + C
= x3ex - 3 fx2exdx =
= x3ex - 3x2ex + 6 jxexdx =
= 2xex - 2 j exdx =