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Mathematics
Problem
Identify the base for which the exponential function
y
=
a
x
y=a^x
y
=
a
x
is decreasing on
R
\mathbb R
R
. a)
a
=
2
a=2
a
=
2
b)
a
=
e
a=e
a
=
e
c)
a
=
1
2
a=\dfrac12
a
=
2
1
d)
a
=
1
a=1
a
=
1
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