Mathematics
Senior High
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T
(1) In + In + 1 = √ * tan²2" x d x + S * tan ² + 1 ) x d x
(n
0
=√ta
0
tan² x(1+tan²x)dx=
=*tan² x · (tan x)'dx=
=
0
1
2n+1
π
Stan²
tan2n x.
0
1
1
COS²x
2n+1 tan²+1x
πC
dx
1214
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