A = 4/ 3.7 + 4/ 7.11 + 4/ 11.15 +…+ 4/1023.1027 16/10/2021 Bởi Kinsley A = 4/ 3.7 + 4/ 7.11 + 4/ 11.15 +…+ 4/1023.1027
A= $\frac{4}{4.7}$ + $\frac{4}{7.11}$ + $\frac{4}{11.15}$ + … + $\frac{4}{1023.1027}$ A= $\frac{1}{4}$ – $\frac{1}{7}$ + $\frac{1}{7}$ – $\frac{1}{11}$ + $\frac{1}{11}$ – $\frac{1}{15}$ + … + $\frac{1}{1023}$ – $\frac{1}{1027}$ A= $\frac{1}{4}$ – $\frac{1}{1027}$ A= $\frac{1023}{4108}$ Chúc bn hok tốt cx Tuyensinh247.com! Bình luận
A = $\frac{4}{3.7}$ + $\frac{4}{7.11}$ + $\frac{4}{11.15}$ + …. + $\frac{4}{1023.1027}$ A = $\frac{1}{3}$ − $\frac{1}{7}$ + $\frac{1}{7}$ − $\frac{1}{11}$ + $\frac{1}{11}$ − $\frac{1}{11}$ + ... + $\frac{1}{1023}$ − $\frac{1}{1027}$ A = $\frac{1}{3}$ – $\frac{1}{1027}$ = $\frac{2024}{6081}$ Bình luận
A= $\frac{4}{4.7}$ + $\frac{4}{7.11}$ + $\frac{4}{11.15}$ + … + $\frac{4}{1023.1027}$
A= $\frac{1}{4}$ – $\frac{1}{7}$ + $\frac{1}{7}$ – $\frac{1}{11}$ + $\frac{1}{11}$ – $\frac{1}{15}$ + … + $\frac{1}{1023}$ – $\frac{1}{1027}$
A= $\frac{1}{4}$ – $\frac{1}{1027}$
A= $\frac{1023}{4108}$
Chúc bn hok tốt cx Tuyensinh247.com!
A = $\frac{4}{3.7}$ + $\frac{4}{7.11}$ + $\frac{4}{11.15}$ + …. + $\frac{4}{1023.1027}$
A = $\frac{1}{3}$ − $\frac{1}{7}$ + $\frac{1}{7}$ − $\frac{1}{11}$ + $\frac{1}{11}$ − $\frac{1}{11}$ + ... + $\frac{1}{1023}$ − $\frac{1}{1027}$
A = $\frac{1}{3}$ – $\frac{1}{1027}$ = $\frac{2024}{6081}$