matlab求下列积分的数值解

clear
syms x
y=int(x^(-x),x,0,1)
y =
int(x^(-x),x = 0 … 1)
vpa(y,10)
ans =
1.291285997

clear
syms x
y=int(exp(2x)cos(x)^3,x, clear
syms x
y=int((1/(2pi)^{(1/2))*exp(-x}2/2),x,0,1)
y =
7186705221432913/36028797018963968erf(1/22^(1/2))*2(1/2)pi^(1/0,2pi)
y =
22/65exp(pi)^4-22/65vpa(ans,10)

clear
syms x
y=int(1/(2*pi)^(1/2)*exp(-x2/2),0,1);
vpa(y,14)
ans =
.34134474606855