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nikitosby
@nikitosby
March 2022
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Решите систему.Срочно!
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sedinalana
Verified answer
B1(1+q³)=13⇒b1=13/(1+q)(1-q+q²)
b1q(1+q)=4⇒b1=4/q(1+q)
13/(1+q)(1-q+q²)=4/q(1+q)
13/(1-q+q²)=4/q
4-4q+4q²-13q=0
4q²-17q+4=0
D=289-64=225
q1=(17-15)/8=1/4⇒b1=4:[1/4+1/16]=4:5/16=4*16/5=64/5
q2=(17+15)/8=4⇒b1=4:(4+16)=4/20=1/5
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Answers & Comments
Verified answer
B1(1+q³)=13⇒b1=13/(1+q)(1-q+q²)b1q(1+q)=4⇒b1=4/q(1+q)
13/(1+q)(1-q+q²)=4/q(1+q)
13/(1-q+q²)=4/q
4-4q+4q²-13q=0
4q²-17q+4=0
D=289-64=225
q1=(17-15)/8=1/4⇒b1=4:[1/4+1/16]=4:5/16=4*16/5=64/5
q2=(17+15)/8=4⇒b1=4:(4+16)=4/20=1/5