http://www.badongo.com/pic/7929865?size=original
Why is it that the content in the brackets is zero?
And how about this?
http://www.badongo.com/pic/7929978?size=original
I don't understand why the brackets are 4.
And finally this one:
http://www.badongo.com/pic/7930026?size=original
Why are the brackets 4 and -4j?
Why is it that the content in the brackets is zero?
And how about this?
http://www.badongo.com/pic/7929978?size=original
I don't understand why the brackets are 4.
And finally this one:
http://www.badongo.com/pic/7930026?size=original
Why are the brackets 4 and -4j?
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