Tính
A= 512 - 512/2 - 512/2^2 - 512/2^3 - ....- 512/210
E= 1 - 1/10 - 1/15 - 1/3 - 1/28 - 1/6 - 1/21
C= 11/1.3 + 47/3.5 + 107/5.7 + 191/7.9 +...+ 971/17.19
Những câu hỏi liên quan
tính: A=1/6-1/39+1/51 / 1/8-1/52+1/68 B=512-512/2-512/2^2-512/2^3-...-512/2^10
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tính A=1/6-1/39+1/51 / 1/8-1/52+1/68 ; B= 512-512/2-512/2^2-212/2^3-...-512/2^10
\(F=\frac{11}{1.3}+\frac{47}{3.5}+\frac{107}{5.7}+\frac{191}{7.9}+...+\frac{971}{17.19}\)
Bai 1: Rut gon bieu thuc sau
B=(2/3)^3×(-3/4)^4×(-1)^5/(2/5)^2 × (-5/12)^3
Bai 2: Tim ia tri bieu thuc sau
M= 512- 512/2- 512/2^2- 512/2^2 - 512/2^3...512/2^10
tínhA frac{11}{1.3}+ frac{47}{3.5}+ frac{107}{5.7}+ frac{191}{7.9}+...+ frac{971}{17.19}B frac{2^{12}.3^5-2^{12}.3^4}{2^{12}.3^6+2^{12}.3^5}- frac{5^{10}.7^3-5^{10}.7^4}{5^9.7^3-5^9.7^3.2^3}C 1.3+3.5+5.7+...+ (2n-1)(2n+1)Giúp mình vs nhanh nhanh nha các bạn
Đọc tiếp
tính
A =\(\frac{11}{1.3}\)+ \(\frac{47}{3.5}\)+ \(\frac{107}{5.7}\)+ \(\frac{191}{7.9}\)+...+ \(\frac{971}{17.19}\)
B = \(\frac{2^{12}.3^5-2^{12}.3^4}{2^{12}.3^6+2^{12}.3^5}\)- \(\frac{5^{10}.7^3-5^{10}.7^4}{5^9.7^3-5^9.7^3.2^3}\)
C = 1.3+3.5+5.7+...+ (2n-1)(2n+1)
Giúp mình vs nhanh nhanh nha các bạn
Tính
1) \(512-\frac{512}{2}-\frac{512}{2^2}-\frac{512}{2^3}-...-\frac{512}{2^{10}}\)
2) \(\frac{1}{3}-\frac{1}{8}-\frac{1}{54}-\frac{1}{108}-\frac{1}{180}-\frac{1}{270}-\frac{1}{378}\)
3)\(3-3^2+3^3-3^4+....+3^{2015}-3^{2016}\)
Bài 1 ;Tính :
B = \(512-\dfrac{512}{2}-\dfrac{512}{2^2}-\dfrac{512}{2^3}-...-\dfrac{512}{2^{10}}\)
B=512(1-1/2-1/2^2-1/2^3-...-1/2^10
B=512*1/1024
B=1/2
B=0.5
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512 -512/2 -512/2^2 -512/2^3 -512/2^4-512/2^5-512/2^6-512/2^7-512/2^8-512/2^9-512/2^10
Cộng các phân số sau:
a
)
−
4
7
+
3
7
;
b
)
−
2
3
+
−...
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Cộng các phân số sau:
a ) − 4 7 + 3 7 ; b ) − 2 3 + − 1 5 ; c ) 7 − 24 + − 5 12 ; d ) − 5 12 + − 3 8 ; e ) − 7 18 + 1 − 45 ; f ) − 3 + − 8 11 .
a ) − 1 7 ; b ) − 13 15 ; c ) − 19 24
d ) − 19 24 ; e ) − 37 90 ; f ) − 41 11
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