how can i slove this proplem "- The vector V is given by V=[2 8 7 3 1 0 8 9]. Write down a single instruction to produce a vector that contains 1 in the place of the odd numbers and -1 in the place of the even numbers."

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Reem Hegazy 2019-10-13

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回答： Fabio Freschi 2019-10-13

- The vector V is given by V=[2 8 7 3 1 0 8 9]. Write down a single Matlab instruction to produce a vector that contains 1 in the place of the odd numbers and -1 in the place of the even numbers.

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Fabio Freschi 2019-10-13

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Fabio Freschi 2019-10-13

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A suggestion: you can easily find the reminder of the division by 2, so that even numers have reminder 0 and odd numbers reminder 1. Now you should map these numbers to -1 and 1, respectively. The problem is that you must write a single instruction, so you can play with algebra: multiply by 2 and subtract 1. From now on it's just a translation of this idea in matlab language