*** Cannot compile formula:
C_{2n}^{0}+C_{2n}^{2}+C_{2n}^{4}+..+C_{2n}^{2n}=2^{2n-1}
*** Error message:
Error: Nothing to show, formula is empty
Bài 2:Tính:
a)
*** Cannot compile formula:
2^{2n}C_{2n}^{0}+2^{2n-2}C_{2n}^{2}+2^{2n-4}C_{2n}^{4}+...+C_{2n}^{2n}
*** Error message:
Error: Nothing to show, formula is empty
b)
*** Cannot compile formula:
2^{2n-1}C_{2n}^{1}+2^{2n-3}C_{2n}^{3}+2^{2n-5}C_{2n}^{5}+...+2C_{2n}^{2n-1}
*** Error message:
Error: Nothing to show, formula is empty
Edited by tranquangthien, 17-09-2017 - 14:57.
