22.1.2
浜屾鍑芥暟
y
=
ax
2
鐨勫浘璞″拰鎬ц川
涓�銆佹暀瀛︾洰鏍?/p>
1.
鐭ラ亾浜屾鍑芥暟鐨勫浘璞℃槸涓�鏉℃姏鐗╃嚎
.
2.
浼氱敾浜屾鍑芥暟
y=ax
2
鐨勫浘璞?/p>
.
3.
鎺屾彙浜屾鍑芥暟
y=ax
2
鐨勬�ц川锛屽苟浼氱伒娲诲簲鐢紟
浜屻�佽鏃跺畨鎺?/p>
1
璇炬椂
涓夈�佹暀瀛﹂噸鐐?/p>
浼氱敾浜屾鍑芥暟
y=ax
2
鐨勫浘璞?/p>
.
鍥涖�佹暀瀛﹂毦鐐?/p>
鎺屾彙浜屾鍑芥暟
y=ax
2
鐨勬�ц川锛屽苟浼氱伒娲诲簲鐢紟
浜斻�佹暀瀛﹁繃绋?/p>
锛堜竴锛夊鍏ユ柊璇?/p>
鎯呮櫙闂锛?/p>
锛?/p>
1
锛?/p>
浣犱滑鍠滄鎵撶鐞冨悧锛?/p>
锛?/p>
2
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锛堜簩锛夎鎺堟柊璇?/p>
浣犱細鐢ㄦ弿鐐规硶鐢讳簩娆″嚱鏁?/p>
y=x
2
鐨勫浘璞″悧
?
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x
鈥?/p>
锛?/p>
4
锛?/p>
3
锛?/p>
2
锛?/p>
1
0
1
2
3
4
鈥?/p>
鈥?/p>
鈥?/p>
x
鈥?/p>
锛?/p>
2
锛?/p>
1.5
锛?/p>
1
锛?/p>
0.5
0
0.5
1
1.5
2
路路路
鈥?/p>
路路路
闂
1
浠庝簩娆″嚱鏁?/p>
y=x
2
鐨勫浘璞′綘鍙戠幇浜嗕粈涔堟�ц川锛?/p>