Czdt digital currency
the ranking of digital currency exchanges is from low to high, including bithumb, okxe, binance, bitmex and coin win national stationsbitcoins, accounting for about 10% of the global bitcoin trading volume. It promises to provide the lowest handling fee in the world. Bithum accounts for 75.7% of South Korea's bitcoin market, 10% of the global bitcoin market, and 50% of South Korea's Ethereum market
note:
1. Asset security is very critical. You can distribute your bitcoin or other currencies through exchanges, online wallets, hardware wallets and paper wallets, so that you won't lose all your assets when attacked or lost by hackers. The secret key information must not be placed in the mailbox or other unsafe online software
2. Whether it is EOS, etc, BTC, LTC, or other platform currencies, in addition to bitcoin itself has been given the attribute of digital currency gold, other currencies are more related to the application and landing of blockchain instry. Pay more attention to and analyze the trend and ecological construction of blockchain instry, so as to return to the original intention of blockchain value investment, It will also be a way to avoid risks
the ranking of digital currency exchanges is from low to high, including bithumb, okxe, binance, bitmex and coin win national stations extended information: note: 1. Asset security is very critical. You can distribute your bitcoin or other currencies through exchanges, online wallets, hardware wallets and paper wallets, so that you won't lose all your assets when attacked or lost by hackers. The secret key information must not be placed in the mailbox or other unsafe online software 2. Whether it is EOS, etc, BTC, LTC, or other platform currencies, in addition to bitcoin itself has been given the attribute of digital currency gold, other currencies are more related to the application and landing of blockchain instry. Pay more attention to and analyze the trend and ecological construction of blockchain instry, so as to return to the original intention of blockchain value investment, It will also be a way to avoid risks
digital currency trading platforms include BTCC, cloud coin, youcoin, yicoin and China bitcoin note: 1. Investing in digital currency is very skillful, but also very cautious. After all, not everyone can make money by investing, and a careless person may fall into the abyss, so it is very important to supplement this knowledge
bx-ay+dz-ct=0，
cx-dy-az+bt=0,
dx+cy-bz-at=0只有零解，
<==>系数行列式
|a b c d|
|b -a d -c|
|c -d -a b|
|d c -b -a|不为0，按第一行展开得a*
|-a d -c|
|-d -a b|
|c -b -a|-b*
|b d -c|
|c -a b|
|d -b -a|+c*
|b -a -c|
|c -d b|
|d c -a|-d*
|b -a d|
|c -d -a|
|d c -b|,用对角线法则展开3阶行列式，得
a(-a^3-ac^2-ad^2-ab^2)-b(a^2b+bd^2+bc^2+b^3)+c(-c^3-cd^2-b^2c-a^2c)-d(b^2d+a^2d+c^2d+d^3)
=-(a^4+b^4+c^4+d^4+2a^2b^2+2a^2c^2+2a^2d^2+2b^2c^2+2b^2d^2+2c^2d^2)
=-(a^2+b^2+c^2+d^2)^2<0(因实数a,b,c,d不全为0，
∴命题成立