如何画正态分布曲线

需要用EXCEL软件来作
具体为：
>> t=0:1:1000;
y=normpdf(x,0,1);
u=int(y,0,t);
plot(t,y)
Undefined function or variable 'x'.
>> t=0:1:1000;
y=normpdf(x,0,1);
u=int(y,0,t);
plot(t,y)
Undefined function or variable 'x'.
用matlab是这样画的
>> t=0:1:1000;x=0:1:1000;
y=normpdf(x,0,1);
u=int(y,0,t);
plot(t,y)
Function 'int' is not defined for values of class 'double'.