?x?1?y??1
𰸡?㣺һκԪһη̣飩 112015ɽʡƽпģ¶壺[abc]Ϊy=ax2+bx+c abcΪʵġΪ[m-2m1]ĺΪһκmֵΪ 𰸡2
ɵãm-2=0m0ãm=2ʴΪ2 㣺1һκĶ壻2¶壮 122015ɽʡൺпһģͼ㣨03һκͼy=2xͼཻڵBһκĽʽ
𰸡y=x+3
㣺ֱཻƽ⣮
45
132015ɽʡƽңؾ꼶ѧ4пģ⣩ͼֱy=kx+bA12B20㣬0kx+bܩ2xĽ⼯Ϊ
𰸡2xܩ1
ֱOAĽʽΪy=2x2xܩ1ʱ0kx+bܩ2xʴΪ2xܩ1
㣺һκһԪһβʽ 142015ɽʡƽңؾ꼶ѧ4пģ⣩ƽֱУ֪A23B47ֱy=kxkk0߶ABн㣬kȡֵΧΪ
7𰸡3k3
㣺ֱཻƽ⣮ 152014-2015ѧɽʡΫʵѧпģͼõġOAB1B1A1B2
46
3B2A2B3DZ߳Ϊ2ĵȱΣAOyϣB1B2B3ֱy=3x
ϣA2015
𰸡201532017
3óֱAA1ĽʽΪy=3x+2óAA1A2A3꣬
A133A2234A3335ó仯ɣA2015201532017ʴΪ201532017
㣺1һκͼϵ2ȱεʣ3ͣ 162015챱ƽпģͼƽֱϵУ A50B32C߶OAϣBC=BAQ߶BCһ㣬Pǣ03ֱPQĽʽΪy=kx+bk0xύڵD
1C꼰bֵ 2kȡֵΧ
3kΪȡֵΧڵʱBBExᣬPQڵEy=ax25axa0ĶıABEDڲaȡֵΧ
47
?3?k??𰸡1Cǣ10b=32
182??a??325 325 48