(-1)^2009×(-1/2)^-2+(根3-π)^0+/1-sin60°/+/-2/+2sin30°-(-根3)^2+(tan45°)^-1提示:/ /代表绝对值
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 18:54:39
(-1)^2009×(-1/2)^-2+(根3-π)^0+/1-sin60°/+/-2/+2sin30°-(-根3)^2+(tan45°)^-1提示:/ /代表绝对值
(-1)^2009×(-1/2)^-2+(根3-π)^0+/1-sin60°/+/-2/+2sin30°-(-根3)^2+(tan45°)^-1
提示:/ /代表绝对值
(-1)^2009×(-1/2)^-2+(根3-π)^0+/1-sin60°/+/-2/+2sin30°-(-根3)^2+(tan45°)^-1提示:/ /代表绝对值
原式=-1*(4)+1+1-根号3/2+2+1-3+1=-1-根号3/2
1/(1*2010)+1/(2*2009)+...+1/(2010*1)-(2010/2011)*(1/1*2009+1/2*2008+...+1/2009*1)
计算2009*(1-1/2009)*(1-1/2008)*(1-1/2007)*.*(1-1/2)
(-1001)^2009*(0.125)^2008*(-2/7)^2009*(-4/13)^2009*(-1/11)^2009
-1^2×(-3)^2009×(-2)^2008÷9/2
根号9+(2009+1/2)-2sin60度+2
2010乘以2009分之2008怎样简算 的答案是错误的.应该如下:2010*2008/2009=(2009+1)*(2009-1)/2009=(2009^2-1)/2009=2009-1/2009
(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+…+(-1/2008×1/2009)
1-1/2)+(1/2-1/3)+(1/3-1/4).(1/2009-1/2010) = 1-1/2+1/2-1/3+1/3-1/4.1/2009-1/2010答案=2009/2010
数列 1+(1+2)+(1+2+3)+(1+2+3+4)+.+(1+2+3+...+2009)=?
计算1/1*2010+1/2*2009+1/3*2008+...+1/2010*1-2010/2011(1/1*2009+1/2*2008+...+1/2009*1)
2009/(2009又2010分之2009)/(1/2*3+1/3*4+...+1/2010*2011)
1+(-2)+3+(-4).+2009+(-2010)=?
(1)1/2*3+1/3*4+1/4*5.1/2006*2005(2)1/2+1/(1+1)*(2+1)+1/(1+2)*(2+2).1/(1+2009)*(2+2009)(3)1+1/(1+2)+1/(1+2+3)+.1/(1+2+3+4.100)
(1/2009-1)*(1/2008-1)*(1/2007-1)……(1/3-1)*(1/2-1))
计算:1+2+3+4+5+…+2009+2010/(1-1/1006)(1-1/1007)…(1-1/2009)(1-1/2010)=()
(2/3)^2009*(3/2)^2010+(-1)^0
计算(1-2)*(2-3)*(3-4)*(4-5)*...*(2008-2009)*(2009-2010)
按照上述的规律计算1/2008*2009*(1*2+2*3+3*4.2008*2009)