1
F(x)=-4/x-3cosx+C
0=-4/π-3*(-1)+C
C=4/π+3
F(x)=-4/x-3cosx+4/π+3
2
2√x|4-1=4-2=2
3
1/2*sin2x|π/4-0=1/2*(sinπ/2-sin0)=1/2*1=1/2
4
1/11^x^11|1-0=1/11
5
-2cos(x/2)|3π/2-1/2=-2(cos3π/4+cos1/4)=-2(-√2/2+cos1/4=√2+2cos1/4
6
1-x²=0
x=1 U x=-1
S+S(1-x²)dx=x-x³/3|(1-(-1)=1-1/3+1-1/3=1 1/3