2道奥数难题a,b,c是三角形的三边长,都为整数,且满足a^2+b^2+c^2-ab-bc-ac=13,周长不超过30,求这样的三角形有几个?30^x=2010,67^y=2010,求x分之2+y分之2=多少?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/31 18:57:04
![2道奥数难题a,b,c是三角形的三边长,都为整数,且满足a^2+b^2+c^2-ab-bc-ac=13,周长不超过30,求这样的三角形有几个?30^x=2010,67^y=2010,求x分之2+y分之2=多少?](/uploads/image/z/5198813-53-3.jpg?t=2%E9%81%93%E5%A5%A5%E6%95%B0%E9%9A%BE%E9%A2%98a%2Cb%2Cc%E6%98%AF%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E4%B8%89%E8%BE%B9%E9%95%BF%2C%E9%83%BD%E4%B8%BA%E6%95%B4%E6%95%B0%2C%E4%B8%94%E6%BB%A1%E8%B6%B3a%5E2%2Bb%5E2%2Bc%5E2-ab-bc-ac%3D13%2C%E5%91%A8%E9%95%BF%E4%B8%8D%E8%B6%85%E8%BF%8730%2C%E6%B1%82%E8%BF%99%E6%A0%B7%E7%9A%84%E4%B8%89%E8%A7%92%E5%BD%A2%E6%9C%89%E5%87%A0%E4%B8%AA%3F30%5Ex%3D2010%2C67%5Ey%3D2010%2C%E6%B1%82x%E5%88%86%E4%B9%8B2%2By%E5%88%86%E4%B9%8B2%3D%E5%A4%9A%E5%B0%91%3F)
xSn@~9H8y$ۇ\*j/RQ mJE0S^]VꩧJ]睙f
+jWWؐLbEЮF)x.;N?g`ՔIUTӆ6aJV_
'lFbpr[9;c.f3Œf勫QH MAM&@6vw[
?-g+3F|E3fw]ոY$?Bu%un