Mathematics
Senior High
Resolved
解き方などこれで大丈夫ですか?
18. [2024 信州大]
次の定積分を求めよ。
(cosxcos2x-cos3xsin4x)dx
cia (at)=smaccos+cosorap -①
sin (α-1) = sinacosp - cosxxstaß -
00s (dep) = cosxxcoop - sind sap - ①
11
cos (α-p)=00020098 + simacing -
③④
tsuosp/fos(p)+os(p)}
①-②
=
csacup = {(α) sin (α-p)}
cos 20052* = f (cos 3x + Cosx)
い
Ogia4x=/siu7x-sin(x)}=1/2(sm7I+5mg)
±
エー
(*) = (60532 +0055-5-7x-4x) de
1/23 [1/1+six+107+0x
52
二(+)
=()
空)-(一号長+骨)
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