Mathematics
Senior High
どうしたらx=-3/4π、π/4になるのですか？🙇🏻♀️
解 2曲線の交点のx座標は, 方程式 sinx = cosx の解であり、
≦x≦πの範囲で解くと
YA
1
3
πT
・π,
4 4
x=
y=cosx
3
π
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