说说y=a1.*exp(-sqrt((a2-lab)^2/a5 (a3-cap)^2/a6 (a4-xin)^2/a7)
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说说y=a1.*exp(-sqrt((a2-lab)^2/a5 (a3-cap)^2/a6 (a4-xin)^2/a7))(1)x 3>-1 (2)6x<5x-7 (3)
A:B=B:C=3AD=AB BD=AB BC/2
A:B=B:C=3AD=AB BD=AB BC/2
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∴a b≥2√ab 1/(a b)≤1/2√ab.相对y=a^(2x-2),(a>0≠1)相对2 3b2≥λb(a b)1.2(x 3)2=x(x 3) 2.x22根号5x 2=0
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a1=1 a2=2 a3=4 a4=7 a5=11 a6=16 a7=22