涓�銆?/p>
棰?/p>
涔犳鏌?/p>
1.
涓?
鍒?
鍑?
鏁?
涓?
鏄?
姝?
姣?
渚?
鍑?
鏁?
鏄?/p>
锛?/p>
锛?/p>
A
銆?/p>
y=15x
2
B
銆?/p>
y=x(x-5)-x
2
C
銆?/p>
y=
1
2
x
Dy=5x-1
2
銆佹姣斾緥鍑芥暟
y=kx
锛屽綋
x=1
鏃讹紝
y=2
锛屽垯璇ュ嚱鏁扮殑琛ㄨ揪寮忔槸
3
銆?/p>
A
銆?/p>
B
涓ゅ湴鐩歌窛
30Km
锛屽皬椋炰互姣忓皬鏃?/p>
6Km
鐨勯�熷害浠?/p>
A
鍦版琛?/p>
鍒?/p>
B
鍦帮紝鑻ヨ浠栦笌
B
鍦扮殑璺濈涓?/p>
yKm
锛屾琛岀殑鏃堕棿涓?/p>
xh
锛屽垯
y
涓?/p>
x
涔嬮棿鐨勫叧绯诲紡涓?/p>
锛?/p>
y
鏄?/p>
x
鐨?/p>
鍑芥暟
浜屻�佺簿閫変緥棰?/p>
1.
鍦ㄧ瓑鑵颁笁瑙掑舰涓紝搴曡竟闀夸负
10cm
銆?/p>
锛?/p>
1
锛夎瘯鍐欏嚭杩欎釜涓夎褰㈢殑闈㈢Н
s
涓庡簳杈逛笂鐨勯珮
h
鐨勫嚱鏁板叧绯诲紡锛?/p>
锛?/p>
2
锛夊綋
h
涓轰綍鍊兼椂锛岄潰绉负
30cm
2
?
锛?/p>
3
锛夊綋闈㈢Н
s
涓轰綍鍊兼椂锛岄珮
h
涓?/p>
4cm
锛?/p>
锛堟湰棰樿暣鍚暟褰㈢粨鍚堟�濇兂锛屾牴鎹浘褰㈠啓鍑哄嚱鏁板叧绯诲紡銆傚凡鐭ヨ嚜鍙橀噺
姹傚嚱鏁板�硷紝宸茬煡鍑芥暟鍊兼眰鑷彉閲忓�硷紝杩涗竴姝ョ悊瑙ｅ嚱鏁板叧绯诲疄闄呬笂鏄?/p>
涓�绉嶅搴斿叧绯汇�?/p>
锛?/p>