A:①③⑤⑥⑦⑧
B:①③⑤⑦⑧
C:①③④⑤⑦
D:全部都是
Don't _________. Don't __________. Your mother will be better soon.
① f(x)=p⋅qx ;② f(x)=px2+qx+1 ;③ f(x)=x(x−q)2+p .(以上三式中、 p,q 均为常数,且 q>1 )