Mathematics
Senior High
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なぜtが入るのかわかるかたいますか??
6 次の等式を満たす関数 f(x) を求めよ。
3
f(x) = S²₁{2x — f(t)}dt
3
f(x) = ₁ {2x-f(t)}dt
3
f(t)}dt=2x5₁dt-S₁f(t)dt
1
3
3
1
3
3
= 2x [t]₁-S₁ f(t)dt = 4x-S₁ f(t) at
1
f(t)dt = a とおくとf(x)=4x-a
3
よってa=(4a)dt=[212-at] = 16-2
すなわち a=16-2a これを解いて α=
16
3
したがって
f(x) = 4x-
16
3
12²
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