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2(2t²-3)⁵t dt
u=(2t²-3) du=4tdt
∫
∫
Rpta: +C
2. ∫xe³ˣdx
u=x , u´=1 , v´=e³ˣ, v=e³ˣ/3
u´=
v=∫e³ˣdx=e³ˣ/3
Rpta: +C
3. ∫xCos 2x dx
Cos(2)
Rpta: +C
4. ∫Cos³xdx
u=sin(x) du=cos(x)dx
∫1-u²du
∫u²du=u³/3
sin(x)-
Rpta: sin(x)-+C
5. ∫sen²x cos²x dx
u=x , u´=1 , v´=cos²x , v=
sen²(x
sen²(1/2x(x+1/2sin(2x))-1/2(x²/2 - 1/4cos(2x))
Rpta: +C