Mathematics

Mathematics

Problem

If a>0a > 0 and b<0b < 0, then ab\sqrt{a} \sqrt{b} is equal to (where, i=−1i = \sqrt{-1} ) a. −a⋅∣b∣-\sqrt{a \cdot |b|} b. a∣b∣i\sqrt{a|b|}i c. a⋅∣b∣\sqrt{a \cdot |b|} d. None of these

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