请问一下10^-6.5*10^4.5-10^-6.5 = -3.1622776601684 * 10 -7AD BE CF=(AB BC CA) (BC/2 CA/2 AB/2)

问题描述:

请问一下10^-6.5*10^4.5-10^-6.5 = -3.1622776601684 * 10 -7AD BE CF=(AB BC CA) (BC/2 CA/2 AB/2)
n(n 2)-n(n-2)=150a5=8,a7=16,求a1与公比q

f(x2)-f(x1)=loga(x2^2-ax2)-loga(x1^2-ax1)因为BE=BC CE=BC CA/2;CF=CA AF=CA AB/2因为f(x)=x^3 x^2 mx 1a(a2-2ab-b2)-b(2a2 ab-b2)