What's the difference using .* and *, or ./ and /?

Hi when do I know to use the . in dividing or multiplying? Originally, I had thought to use .* or ./ if we are doing element-by-element product/division of two matrices, and use * for matrix multiplication/division. If it's related to the array/vector/matrix stuff, I'm a bit fuzzy on that too, so any explanations would be great!!

Thanks!!

Answer 1

[per isakson]

Element-by-element operations. These are obtained using .* , .^, ./, or .\. See the Arithmetic Operators page. See

• Array vs. Matrix Operations
• times, .* Element-wise multiplication