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Math Help - what is a scalar?

  1. #1
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    what is a scalar?

    a) what is a scalar?
    b)name two ways in which scalar arithmetic differs from matrix arithmetic
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  2. #2
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    Quote Originally Posted by ana1808 View Post
    a) what is a scalar?
    b)name two ways in which scalar arithmetic differs from matrix arithmetic
    That question is so extensive.
    This may help: Scalar -- from Wolfram MathWorld
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  3. #3
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    Smile

    You can think about it like this...

    a scalar is a number.

    a matrix is a collection of a collection of numbers...like a 2d array. When you multiply scalars, it's like multiplying two numbers. when u multiply matrices, there is a specific way you must multiply them and only certain matrices can be multiplied together.

    scalar multiplication is commutative (a*b=b*a) but matrix multiplication is not. small little rules like that change...

    again, this is a very drilled down version.

    Quote Originally Posted by ana1808 View Post
    a) what is a scalar?
    b)name two ways in which scalar arithmetic differs from matrix arithmetic
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