what is the word need to fill in this blank

If x is a vector, and you want to define a variable y according to the equation Y=2X^2, you would need to use array operations. The expression to define y would be:

Answer 1

[per isakson]

>> x = 1:4;
>> y = 2*x.^2
y =
     2     8    18    32

But wouldn't it had been better to find this in the documentation? Searching the documentation is an essential part of using Matlab. See

• Operators and Elementary Operations
• power, .^, Element-wise power