f(x) f(x 1)=8x 7x=1 rcosA,y=-1 rsinA,r>0,A

问题描述:

f(x) f(x 1)=8x 7x=1 rcosA,y=-1 rsinA,r>0,A
f(x2)-f(x1)=loga(x2^2-ax2)-loga(x1^2-ax1)|ax b|0)

x^2/a^2 y^2/b^2=1中,SPF1F2=b^2*tanβ/2A=2×2×3×5×7,B=2×3×3×5×7比较A= 则s,t属于A,t不等于0比较x^2/a^2 y^2/b^2=1中,SPF1F2=b^2*tanβ/2