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Mathematics
Mathematics
Problem
Which of the following equals
a
b
\sqrt{a}\,\sqrt{b}
a
b
for
a
,
b
≥
0
a,b\ge 0
a
,
b
≥
0
? a)
a
+
b
\sqrt{a}+\sqrt{b}
a
+
b
b)
a
b
ab
ab
c)
a
b
\sqrt{ab}
ab
d)
a
+
b
\sqrt{a+b}
a
+
b
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