é¢ç®åºä¸ºãå·²ç¥f(x)=x^2,g(x)=(1/2)^x-m,è¥å¯¹äºä»»æx1â[0,2],åå¨x2â[1,2],使å¾f(x1)â¥g(x2),æ±å®æ°mçåå¼èå´ãã
f(x)=x^2ãg(x)=(1/2)^x-mé½ä¸ºå¢å½æ°
x1â[0,2]æ¶f(x)æå°å¼=f(0)=0
x2â[1,2]æ¶g(x)æå°å¼=g(1)=1/2-m
f(x1)â¥g(x2),
0â¥1/2-m
mâ¥1/2
追é®g(x))=(1/2)^x-m å¨[0,+â)ä¸æ¯åå½æ°åï¼
追çå¯ï¼ä¸å°å¿éäºã
f(x)=x^2为å¢å½æ°ï¼g(x)=(1/2)^x-m为åå½æ°
x1â[0,2]æ¶f(x)æå°å¼=f(0)=0
x2â[1,2]æ¶g(x)æå°å¼=g(2)=1/4-m
f(x1)â¥g(x2),
0â¥1/4-m
mâ¥1/4