Mathematics
Senior High
Resolved
赤線引いたところがなぜその式変形をしたのかわからないので,教えてください
249 (1) |tan‘xdx= tanx tan ra,
= tanx corr−1x
tan2x
2
cos²x
-1)dx
=S- dx= tanxdx
cos² x
= tanx{tanx)dx—
1½ tan'y-tanx+x+C
1stan
1
Cos² 2
X
249*(1) Stan‘xdx
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なるほど、ありがとうございます