[微積] 兩題證明
1.use the mean value theorem to prove the inequality
｜sin a - sin b｜ <= ｜a-b｜ for all a and b
是要分三個case嗎?? a>b a=b a<b
2.prove the identity
arcsin x-1/x+1 = 2arctan 開根號X -π/2
我是先把上是假設一個函式，想讓其函數=0
但函式微分後變好複雜，牽扯隱函數微分~誰來幫幫我啊
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