Physics
Senior High
どうしてx+yを図のようにかけるのですか？
別解
f(0) = cos0+sin0 は図のような値であるから,
0が全実数を動いたときの値域 W は,
-√2≤ f(0) ≤√2
(
(cost, sine)
-√2
(一一/)
(1/27/2))
Of(0)
2
x+y=cos0+sin0
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