close
標題:
數學題好難!好難!help me~~~~~
發問:
HELP ME! ( )係乘呀! 要步驟呀! thx~ 解下列方式: ①1÷ x-3=1 解下列各不等式: ②a+2>3 ③3(x)-4<5 以二進數表示下列的數值: ④1(2)(2)(2)(2)+0(2)(2)(2)+0(2)+1 把下列數字以展開式表示: ⑤11110(2) ⑥4AB(16) ⑦把2E1(16)轉換為十進數: ⑧把110110(2)轉換為十進數: ⑨把37(10)轉換為二進數: ⑩把444(10)轉換為十六進數:
/=除 and *=乘 1) 1/x-3=1, 1/x=4, 1/x*x=4*x, 1=4x, x=1/4, x=0.25 2) a+2>3, a+2-2>3-2, a>1 3) 3x-4<5, 3x-4+4<5+4, 3x<9, 3x/3<9/3, x<3 4) 1(2)(2)(2)(2)+0(2)(2)(2)+0(2)+1 =1*24+0*23+0*2+0*21+1*20 =10001(2) 5) 11110(2) =1*24+1*23+1*22+1*21+0*20 =1(2)(2)(2)(2)+1(2)(2)(2)+1(2)(2)+1(2)+0 6) A=10, B=11, C=12 etc. 4AB(16) =4*162+10*161+11*160 =4(16)(16)+10(16)+11 7) 2E1(16) =2*162+14*161+1*160 =512+224+1 =737 =7*102+3*101+7*100 =700+30+7 =737(10) 8) 110110(2) =1*25+1*24+0*23+1*22+1*21+0*20 =54 =54(10) 9) 37(10)=37 37/2=18 and 1餘數 18/2=9 and 0餘數 9/2=4 and 1餘數 4/2=2 and 0餘數 2/2=1 and 0餘數 剩下1 Low to high, i.e. 100101(2) 10) 444(10)=444 444/16=27 and 12餘數 27/16=1 and 11餘數 剩下1 12=C and 11=B Therefore, 1BC(16) 2010-07-08 12:02:37 補充: 5) 30 6) 1195 2010-07-08 12:05:57 補充: 001那位人兄請驗算-3-
其他解答:
A1. 1÷(x-3)=1 x-3=1 x=4 A2. a+2>3 a>1 A3 3x-4<5 3x<9 x>3 A4. 1(2)(2)(2)(2)+0(2)(2)(2)+0(2)+1 =10001(2做底) A5 11110(2) =1*2^4+1*2^3+1*2^2+1*2=30 A6 4AB(16) =4*16^2+10*16+11=1344 A7 2E1(16) =2*16^2+14*16+1=481 A8 110110(2) =1*2^5+1*2^4+1*2^2+1*2=54 A9 37(10) =1*2^5+1*2^2+1=100101(2) A10 444(10) =1*16^2+11*16+12=1BC(16)A9A3995907B431A4
數學題好難!好難!help me~~~~~
發問:
HELP ME! ( )係乘呀! 要步驟呀! thx~ 解下列方式: ①1÷ x-3=1 解下列各不等式: ②a+2>3 ③3(x)-4<5 以二進數表示下列的數值: ④1(2)(2)(2)(2)+0(2)(2)(2)+0(2)+1 把下列數字以展開式表示: ⑤11110(2) ⑥4AB(16) ⑦把2E1(16)轉換為十進數: ⑧把110110(2)轉換為十進數: ⑨把37(10)轉換為二進數: ⑩把444(10)轉換為十六進數:
此文章來自奇摩知識+如有不便請留言告知
最佳解答:/=除 and *=乘 1) 1/x-3=1, 1/x=4, 1/x*x=4*x, 1=4x, x=1/4, x=0.25 2) a+2>3, a+2-2>3-2, a>1 3) 3x-4<5, 3x-4+4<5+4, 3x<9, 3x/3<9/3, x<3 4) 1(2)(2)(2)(2)+0(2)(2)(2)+0(2)+1 =1*24+0*23+0*2+0*21+1*20 =10001(2) 5) 11110(2) =1*24+1*23+1*22+1*21+0*20 =1(2)(2)(2)(2)+1(2)(2)(2)+1(2)(2)+1(2)+0 6) A=10, B=11, C=12 etc. 4AB(16) =4*162+10*161+11*160 =4(16)(16)+10(16)+11 7) 2E1(16) =2*162+14*161+1*160 =512+224+1 =737 =7*102+3*101+7*100 =700+30+7 =737(10) 8) 110110(2) =1*25+1*24+0*23+1*22+1*21+0*20 =54 =54(10) 9) 37(10)=37 37/2=18 and 1餘數 18/2=9 and 0餘數 9/2=4 and 1餘數 4/2=2 and 0餘數 2/2=1 and 0餘數 剩下1 Low to high, i.e. 100101(2) 10) 444(10)=444 444/16=27 and 12餘數 27/16=1 and 11餘數 剩下1 12=C and 11=B Therefore, 1BC(16) 2010-07-08 12:02:37 補充: 5) 30 6) 1195 2010-07-08 12:05:57 補充: 001那位人兄請驗算-3-
其他解答:
A1. 1÷(x-3)=1 x-3=1 x=4 A2. a+2>3 a>1 A3 3x-4<5 3x<9 x>3 A4. 1(2)(2)(2)(2)+0(2)(2)(2)+0(2)+1 =10001(2做底) A5 11110(2) =1*2^4+1*2^3+1*2^2+1*2=30 A6 4AB(16) =4*16^2+10*16+11=1344 A7 2E1(16) =2*16^2+14*16+1=481 A8 110110(2) =1*2^5+1*2^4+1*2^2+1*2=54 A9 37(10) =1*2^5+1*2^2+1=100101(2) A10 444(10) =1*16^2+11*16+12=1BC(16)A9A3995907B431A4
文章標籤
全站熱搜
留言列表