Các câu hỏi tương tự
rut gon bieu thuc sau:
a) 34^2+35^2+........+100^2
b)1^2+3^2+5^2+...+99^2
rut gon bieu thuc:(1/2+1)(1/3+1)(1/4+1).....(1/99+1)
rut gon bieu thuc sau
a . S=1+\(\frac{1}{3}+\frac{1}{^{^{3^2}}}+\frac{1}{3^3}+...+\frac{1}{3^n}\)
Rut gon bieu thuc sau
A=\(\frac{1}{2}+\frac{1}{2^2}+\frac{1}{2^3}+...+\frac{1}{2^{100}}\)
cho bieu thuc a^3+2a^2-1/a^3+2a^2+2a+1
a) Rut gon bieu thuc
b)Chung minh rang neu a la so nguyen thi gia tri tim duoc cua bieu thuc o cau a) la 1 phan so toi gian
rut gon bieu thuc sau -4+{x-15}+3
Cho bieu thuc A = a^3+2a2 -1/ a3+2a2+2a+1
a, Rut gon bieu thuc
b, CMR neu a la mot so nguyen thi A toi gian
Rut gon bieu thuc sau:T=(1/2+1).(1/3+1). (1/4+1)....(1/98+1).(1/99+1)
cho bieu thuc A =\(\frac{a^3+2a^2-1}{a^3+2a^2+2a+1}\)
a)rut gon bieu thuc
b)chung minh rang neu a la so nguyen thi gia tri cua bieu thuc tim duoc o cau a la mot phan so toi gian