evalute: lim x》0 tan3x/tanx
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Answer:
f(x) is an odd function
Step-by-step explanation:
f(x)=tanx−tan
3
x+tan
5
x−tan
7
x+....
=
1+tan
2
x
tanx
=
2
sin(2x)
limx→0
+
f(x)/x=
2x
sin(2x)
=1
sin(x)isanoddfunction
sin(−x)=−sin(x)
∫
0
6
π
2
sin(2x)
=
8
1
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