Mathematics
Senior High
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定積分です
赤で囲んだ部分はどこから出てきたのですか?
104 次の等式を満たす関数 f(x) を求めよ。 (1
(1) f(x)=x+Sof(t)dt
104.
(1) Sof(t)dt=a とおくと
2
f(x)=x+a
2
1D²K² S²₁ƒ(1)α² = √² ( ² + a)
ゆえに So (t+a)dt
0
= [1/²2 + a
=[
at
12
=2+2a
これより, 2+2a = α であるから
したがって f(x)=x-2
a=-2
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