设有长为a,宽为b的矩形,其边在半径为R的半圆的直径所在的直线上,另两个顶点正好在半圆的圆周上,此矩形的周长最大时,a/b=?有过程最好,貌似是要求导,
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![设有长为a,宽为b的矩形,其边在半径为R的半圆的直径所在的直线上,另两个顶点正好在半圆的圆周上,此矩形的周长最大时,a/b=?有过程最好,貌似是要求导,](/uploads/image/z/12304392-24-2.jpg?t=%E8%AE%BE%E6%9C%89%E9%95%BF%E4%B8%BAa%2C%E5%AE%BD%E4%B8%BAb%E7%9A%84%E7%9F%A9%E5%BD%A2%2C%E5%85%B6%E8%BE%B9%E5%9C%A8%E5%8D%8A%E5%BE%84%E4%B8%BAR%E7%9A%84%E5%8D%8A%E5%9C%86%E7%9A%84%E7%9B%B4%E5%BE%84%E6%89%80%E5%9C%A8%E7%9A%84%E7%9B%B4%E7%BA%BF%E4%B8%8A%2C%E5%8F%A6%E4%B8%A4%E4%B8%AA%E9%A1%B6%E7%82%B9%E6%AD%A3%E5%A5%BD%E5%9C%A8%E5%8D%8A%E5%9C%86%E7%9A%84%E5%9C%86%E5%91%A8%E4%B8%8A%2C%E6%AD%A4%E7%9F%A9%E5%BD%A2%E7%9A%84%E5%91%A8%E9%95%BF%E6%9C%80%E5%A4%A7%E6%97%B6%2Ca%2Fb%3D%3F%E6%9C%89%E8%BF%87%E7%A8%8B%E6%9C%80%E5%A5%BD%2C%E8%B2%8C%E4%BC%BC%E6%98%AF%E8%A6%81%E6%B1%82%E5%AF%BC%2C)
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