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|3tan30°-1|-4(sin²60°-1)+∫2×cos45°
人气:410 ℃ 时间:2020-05-25 13:25:19
解答
|3tan30°-1|-4(sin²60°-1)+∫2×cos45°
=|√ 3-1|-4(3/4 -1)+∫2×√ 2 /2
=√ 3 -1-3 +4+1
=√ 3 +1
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