exponential - How to represent e^(-t^2) in MATLAB? -

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i beginner in matlab, , need represent e(-t2).

i know that, example, represent ex use exp(x), , have tried following

1) tp=t^2; / tp=t*t; x=exp(-tp);

2) x=exp(-t^2);

3) x=exp(-(t*t));

4) x=exp(-t)*exp(-t);

what correct way it?

if t matrix, need use element-wise multiplication or exponentiation. note dot.

x = exp( -t.^2 )

or

x = exp( -t.*t )

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