Khai triển đa thức $\displaystyle P\left( x \right)={{\left( \frac{1}{3}+\frac{2}{3}x \right)}^{10}}={{a}_{0}}+{{a}_{1}}x+...+{{a}_{9}}{{x}^{9}}+{{a}_{10}}{{x}^{10}}$. Tìm hệ số $\displaystyle {{a}_{k}}$$\displaystyle \left( 0\le k\le 10 \right)$ lớn nhất trong khai triển trên.
A. $\displaystyle 1+\frac{{{2}^{7}}}{{{3}^{10}}}C_{10}^{7}.$
B. $\displaystyle \frac{{{2}^{7}}}{{{3}^{10}}}C_{10}^{7}.$
C. $\displaystyle \frac{{{2}^{6}}}{{{3}^{10}}}C_{10}^{6}.$
D. $\displaystyle \frac{{{2}^{8}}}{{{3}^{10}}}C_{10}^{8}.$
A. $\displaystyle 1+\frac{{{2}^{7}}}{{{3}^{10}}}C_{10}^{7}.$
B. $\displaystyle \frac{{{2}^{7}}}{{{3}^{10}}}C_{10}^{7}.$
C. $\displaystyle \frac{{{2}^{6}}}{{{3}^{10}}}C_{10}^{6}.$
D. $\displaystyle \frac{{{2}^{8}}}{{{3}^{10}}}C_{10}^{8}.$
Loga
Hóa Học lớp 12
