Các câu hỏi tương tự
Tìm phần nguyên của
A= (\(\frac{1}{2}+\frac{1}{3}+\frac{1}{5}+\frac{1}{7}+\frac{1}{11}+\frac{1}{13}\)nhân với 231
GPT :a, left(1+frac{1}{2}+frac{1}{3}+...+frac{1}{2011}+frac{1}{2012}..right).503x1+frac{2014}{2}+frac{2015}{3}+...+frac{4023}{2011}+frac{4024}{2012}b, left(frac{0,6+frac{3}{7}-frac{2}{11}}{1+frac{5}{7}-frac{5}{11}}+frac{frac{2}{3}-1,5+frac{2}{9}}{frac{5}{3}-3,75+frac{5}{9}}right)+93xleft(frac{3737}{4545}-frac{954954}{975975}right).left(frac{1}{2}-frac{1}{3}-frac{1}{6}right)-7.left(x-3right)
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GPT :
a, \(\left(1+\frac{1}{2}+\frac{1}{3}+...+\frac{1}{2011}+\frac{1}{2012}..\right).503x=1+\frac{2014}{2}+\frac{2015}{3}+...+\frac{4023}{2011}+\frac{4024}{2012}\)
b, \(\left(\frac{0,6+\frac{3}{7}-\frac{2}{11}}{1+\frac{5}{7}-\frac{5}{11}}+\frac{\frac{2}{3}-1,5+\frac{2}{9}}{\frac{5}{3}-3,75+\frac{5}{9}}\right)+93x=\left(\frac{3737}{4545}-\frac{954954}{975975}\right).\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)-7.\left(x-3\right)\)
Tìm điều kiện xác định rồi giải các phương trình sau:a) frac{x-2}{2+x}-frac{3}{x-2}frac{2left(x-11right)}{x^2-4}b) frac{3}{4left(x-5right)}+frac{15}{50-2x^2}frac{-7}{6left(x+5right)}c) frac{8x^2}{3left(1-4x^2right)}frac{2x}{6x-3}-frac{1+8x}{4+8x}d) frac{13}{left(x-3right)left(2x+7right)}+frac{1}{2x+7}frac{6}{x^2-9}Help me!
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Tìm điều kiện xác định rồi giải các phương trình sau:
a) \(\frac{x-2}{2+x}-\frac{3}{x-2}=\frac{2\left(x-11\right)}{x^2-4}\)
b) \(\frac{3}{4\left(x-5\right)}+\frac{15}{50-2x^2}=\frac{-7}{6\left(x+5\right)}\)
c) \(\frac{8x^2}{3\left(1-4x^2\right)}=\frac{2x}{6x-3}-\frac{1+8x}{4+8x}\)
d) \(\frac{13}{\left(x-3\right)\left(2x+7\right)}+\frac{1}{2x+7}=\frac{6}{x^2-9}\)
Help me!
\(A=\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}\)
\(A=\frac{3\left(0,125-0,1+\frac{1}{11}+\frac{1}{12}\right)}{-5\left(0,125-0,1+\frac{1}{11}+\frac{1}{12}\right)}+\frac{3\left(0,5+\frac{1}{3}-0,25\right)}{5\left(0,5+\frac{1}{3}-0,25\right)}=-\frac{3}{5}+\frac{3}{5}=0\)
23 tháng 8 2016 lúc 10:43
Tính : \(\frac{\left(1^4+\frac{1}{4}\right)\left(3^4+\frac{1}{4}\right)\left(5^4+\frac{1}{4}\right)\left(7^4+\frac{1}{4}\right)\left(9^4+\frac{1}{4}\right)\left(11^4+\frac{1}{4}\right)}{\left(2^4+\frac{1}{4}\right)\left(4^4+\frac{1}{4}\right)\left(6^4+\frac{1}{4}\right)\left(8^4+\frac{1}{4}\right)\left(10^4+\frac{1}{4}\right)\left(12^4+\frac{1}{4}\right)}\)
tính nhanh biểu thức sau:
A=\(\frac{1}{\left(x+1\right)\left(x+3\right)}+\frac{1}{\left(x+3\right)\left(x+5\right)}+\frac{1}{\left(x+5\right)\left(x+7\right)}+\frac{1}{\left(x+7\right)\left(x+9\right)}+\frac{1}{\left(x+9\right)\left(x+11\right)}\)
Rút gọn rồi tìm các giá trị nguyên của x để A là số nguyên
\(A=\left(1-\frac{1}{x+1}\right).\left(1-\frac{1}{x+2}\right).\left(1-\frac{1}{x+3}\right)...\left(1-\frac{1}{x+2021}\right).\left(1-\frac{1}{x+2022}\right)\)
Tính nhanh giá trị biểu thức sau :
A= \(\frac{1}{\left(x+1\right)\left(x+3\right)}+\frac{1}{\left(x+3\right)+\left(x+5\right)}+\frac{1}{\left(x+5\right)\left(x+7\right)}+\frac{1}{\left(x+7\right)\left(x+9\right)}+\frac{1}{\left(x+9\right)\left(x+11\right)}\)
Tìm x,y:1..frac{11}{13}-left(frac{5}{42}-xright)-left(frac{15}{28}-frac{11}{13}right)2. left|x+frac{4}{15}right|-left|-3,75right|-left|-2,15right|3. left|4.xright|-left|-13.5right|left|2frac{1}{4}right|4. frac{-2,6}{x}frac{-12}{42}5. left|x+5right|+left(3y-4right)^{2012}0
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Tìm x,y:
1..\(\frac{11}{13}-\left(\frac{5}{42}-x\right)=-\left(\frac{15}{28}-\frac{11}{13}\right)\)
2. \(\left|x+\frac{4}{15}\right|-\left|-3,75\right|=-\left|-2,15\right|\)
3. \(\left|4.x\right|-\left|-13.5\right|=\left|2\frac{1}{4}\right|\)
4. \(\frac{-2,6}{x}=\frac{-12}{42}\)
5. \(\left|x+5\right|+\left(3y-4\right)^{2012}=0\)