Resolução - Matlab

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RESOLUÇÃO
Questão 1a)
x=[0.2:0.2:1]
y=[0.345,1.279,2.516,4.671,8.054]
for i=1:length(y)-1,y=diff(y),end
Questão 1b)
x=[2:0.1:3]
y=((x.^3+sin(x))/(cosh(x)+1))+exp(x)
for i=1:length(y)-1,y=diff(y),end
Questão 2a)
T=[250,380,472,689,927,1038,1326]
t=[0.10,0.23,0.57,0.68,0.97,1.31,1.72]
z=interp1(t,T,0.6,'spline')
z=interp1(t,T,0.18,'spline')
z=interp1(t,T,1.55,'spline')
Questão 2b)
x=[0.2:0.1:0.7]
y=[1.352,4.730,6.327,8.431,9.275,12.016]
f=interp1(x,y,0.21,'spline')
f=interp1(x,y,0.47,'spline')
f=interp1(x,y,0.68,'spline')
Questão 3a)
x=[1:0.44444:5]
y=(sin(x).^2+3)./((x.^2)+1)
co=[0.5 1 1 1 1 1 1 1 1 0.5]
t=y.*co
s=sum(t)
I=(0.44444*s)
Questão 3b - 1)
x=[1.53:0.272:4.25]
y=((sin(x).^2)+1)./(log(x)+3)
co=[0.5 1 1 1 1 1 1 1 1 1 0.5]
t=y.*co
s=sum(t)
I=(0.272*s)
Questão 3b - 2)
x=[0.68:0.16:2.76]
y=(exp(x.^2))./(1+(exp(2*x.^2)))
co=[1 4 2 4 2 4 2 4 2 4 2 4 2 1]
t=y.*co
s=sum(t)
I=(0.16/3)*s
Questão 3b – 3)
x=[1:0.1:3]
y=(x.^2+exp(1)-log(x))./(abs(cos(x))+5)
co=[1 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4 1]
t=y.*co
s=sum(t)
I=vpa(((0.1/3)*s),20)
Questão 3b - 4)
x=[0:0.5:3]
y=(x.*exp(2*x))./((1+2*x).^2)
co=[1 4 2 4 2 4 1]
t=y.*co
s=sum(t)
I=(0.5/3)*s
Questão 4a - 1)
x=[2.71:0.16:3.83]
y=((sin(x).^2)+(cos(x).^2)+exp(2))./((x.^(1/2))+log(x))
co=[0.5 1 1 1 1 1 1 0.5]
t=y.*co
s=sum(t)
I=0.16*s
Questão 4a - 2)
x=[2.71:0.16:3.83]
y=((sin(x).^2)+(cos(x).^2)+exp(2))./((x.^(1/2))+log(x))
co=[1 4 2 4 2 4 2 1]
t=y.*co
s=sum(t)
I=(0.16/3)*s
x=[2.71:0.16:3.83]