高等数学计算题第二问怎么写?
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(1)
pk=C(2/3)^k ; k=1,2,3
p1+p2+p3=1
C( 2/3+ 4/9+ 8/27) =1
C(18+12+8)/27=1
C=27/38
(2)
pk = Cλ^k/k! ; k=1,2,3,......
lim(n->∞ )∑(i:1->n) Cλ^i/i! =1
consider
e^x = 1+ x/1!+x^2/2!+....
x= λ
e^λ=1+ λ/1!+λ^2/2!+....
e^λ-1= λ/1!+λ^2/2!+....
lim(n->∞ )∑(i:1->n) Cλ^i/i! =1
C(e^λ-1) =1
C= 1/(e^λ-1)
pk=C(2/3)^k ; k=1,2,3
p1+p2+p3=1
C( 2/3+ 4/9+ 8/27) =1
C(18+12+8)/27=1
C=27/38
(2)
pk = Cλ^k/k! ; k=1,2,3,......
lim(n->∞ )∑(i:1->n) Cλ^i/i! =1
consider
e^x = 1+ x/1!+x^2/2!+....
x= λ
e^λ=1+ λ/1!+λ^2/2!+....
e^λ-1= λ/1!+λ^2/2!+....
lim(n->∞ )∑(i:1->n) Cλ^i/i! =1
C(e^λ-1) =1
C= 1/(e^λ-1)
追问
consider后面什么意思
追答
consider ( 考虑 )
Taylor's expansion of e^x
e^x = 1+ x/1!+x^2/2!+....
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