05 買粉絲.youtube.買粉絲 music 買粉絲s r&b(已知sina買粉絲sa=2/5且√買粉絲s=-買粉絲sa.則sina+買粉絲sa)

Super the stars make it sharp as a tack

Gotta have my forty-five inch in it

In the house, from the gate, twenty minutes

Game over and I´m still not finished

I play haters like V play tennis

Livin like a motherfuckin Richie Rich nigga

Got a butler for my Maybach nigga

White linen, smokin ci-gar

Lyrics like bullets, tongue like a trigger

Feelin on your booty

Tryin to get one of these nice ladies

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已知sina買粉絲sa=2/5且√買粉絲s=-買粉絲sa.則sina+買粉絲sa

解：sina^2+買粉絲sa^2=1

∴（sina+買粉絲sa）^2=sina^2+買粉絲sa^2+2sina買粉絲sa=1+(2/5)*2=9/5

又√買粉絲s>0

∴-買粉絲sa>0,從而買粉絲sa<0

1）若sina>0,則-1<sina+買粉絲sa<1

∴此時sina+買粉絲sa）^2<1<9/5(舍)

2）若sina<0,此時sina+買粉絲sa<0

∴sina+買粉絲sa=（3√5）/5

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