楂樻暟绛旀
(
涓?/p>
)
涔犻鍐岀瓟妗?/p>
绗叚鐗?/p>
涓嬪唽
鍚屾祹澶у鏁板绯?/p>
缂?/p>
绗叓绔?/p>
澶氬厓鍑芥暟鐨勫井鍒嗘硶鍙婂叾搴旂敤
搂
1
澶氬厓鍑芥暟姒傚康
涓�
銆?/p>
璁?
姹?/p>
绛?/p>
妗?/p>
锛?
浜屻�佹眰涓嬪垪鍑芥暟鐨勫畾涔夊煙锛?/p>
銆?/p>
y2
銆?/p>
涓夈�佹眰涓嬪垪鏋侀檺锛?/p>
x2siny
1
銆?/p>
lim
锛?/p>
0
锛?/p>
2
銆?/p>
x2y
鍥涖�佽瘉鏄庢瀬闄?/p>
lim
涓嶅瓨鍦?/p>
璇佹槑锛?/p>
褰撴部鐫�
x
杞磋秼浜?/p>
锛?/p>
0
锛?/p>
0
锛?/p>
鏃讹紝
鏋侀檺涓洪浂锛?/p>
褰撴部鐫�
瓒嬩簬
锛?/p>
0
锛?/p>
0
锛?/p>
鏃讹紝
鏋侀檺涓?/p>
浜?/p>
鑰呬笉鐩哥瓑锛屾墍浠ユ瀬闄愪笉瀛樺湪
21,
2
浜?/p>
銆?/p>
璇?/p>
鏄?/p>
鍑?/p>
鏁?/p>
鍦?/p>
鏁?/p>
涓?/p>
xoy
闈?/p>
涓?/p>
杩?/p>
缁?/p>
銆?/p>
璇佹槑锛氬綋
鏃讹紝
f(x,y)
涓哄垵绛夊嚱鏁帮紝杩炵画銆傚綋
鏃讹紝
锛屾墍浠ュ嚱鏁板湪锛?/p>
0
锛?/p>
0
锛変篃杩炵画銆傛墍浠ュ嚱鏁?/p>
鍦ㄦ暣涓?/p>
xoy
闈笂杩炵画銆?/p>
鍏�?/p>
璁?/p>
涓斿綋
y=0
鏃?/p>
锛?/p>
姹?/p>
f(x)
鍙?/p>
z
鐨勮〃杈惧紡
.
瑙ｏ細
锛?
搂
2
鍋忓鏁?/p>
銆佽
楠岃瘉
锛?/p>
璇?/p>
鏄?/p>
锛?
銆佹眰绌洪棿鏇茬嚎
鍦ㄧ偣锛?/p>
,,1
锛夊鍒囩嚎涓?/p>
y
杞存鍚戝す瑙?/p>
x23
銆佽
姹?/p>
fx(x,1)
( 1) y
4
銆佽
姹?/p>
锛?/p>
锛?/p>
瑙ｏ細
锛?/p>
銆佽
锛岃瘉鏄?/p>
6
銆佸垽鏂笅闈㈢殑鍑芥暟鍦?/p>
(0,0)
澶勬槸鍚﹁繛缁紵鏄惁鍙锛堝亸瀵硷級锛熻鏄庣悊鐢?/p>
222
杩?/p>
缁?/p>
锛?/p>
涓?/p>
瀛?/p>
鍦?/p>
锛?
7
銆佽鍑芥暟
f(x,y)
鍦ㄧ偣锛?/p>
a,b
锛夊鐨勫亸瀵兼暟瀛樺湪锛屾眰
锛?/p>
2fx(a,b)
锛?/p>
搂
3
鍏ㄥ井鍒?/p>
1
銆佸崟閫夐