numerical integration error

How come I get an error? What does this mean?

X = 0:1:100; Y = X^(-1/2)*exp(-0.5*(0.00009996^2/X+34.3713^2*X)); Z = trapz(X,Y)
??? Error using ==> mpower
Inputs must be a scalar and a square matrix.

How can I numerically integrate the function Y?

Answer 1

[Sean de Wolski]

You need a '.' before your '^', i.e:

 Y = X.^(...)

[Matt Fig]

And also for the / and * involving the vector X.

[Pavol Namer]

Hi I solving similar problem. I don't realy understand the second comment "And also for the / and * involving the vector X."

What is the righ equstion for Y = X^(-1/2)*exp(-0.5*(0.00009996^2/X+34.3713^2*X)) It is: Y = X.^(-1/2)*exp(-0.5*(0.00009996^2./X+34.3713^2.*X))

I try to type function

and don't know how, because same error appers...

Thank you for your answer.