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Hummingbird25
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HELP: A summation question
Hi
Given the sum
[tex]\sum _{p=0} ^{\infty} (-1)^p \frac{4p+1}{4^p}[/tex]
I have tried something please tell if I'm on the right track
Looking at the alternating series test
(a) [tex]1/(4^{p+1}) < (1/(4^p))[/tex]
(b) [tex]\mathop {\lim }\limits_{p \to \infty } b_p = \mathop {\lim }\limits_{p \to \infty } \frac{1}{{4^p }} = 0[/tex]
Then according to the test this allows me to write [tex]\sum _{p = 0} ^{\infty} 4^{-p} = 4/3[/tex]
Can anybody please verify if I'm heading in the right direction on this? Or am I totally wrong?
Sincerely Yours
Hummingbird
Hi
Given the sum
[tex]\sum _{p=0} ^{\infty} (-1)^p \frac{4p+1}{4^p}[/tex]
I have tried something please tell if I'm on the right track
Looking at the alternating series test
(a) [tex]1/(4^{p+1}) < (1/(4^p))[/tex]
(b) [tex]\mathop {\lim }\limits_{p \to \infty } b_p = \mathop {\lim }\limits_{p \to \infty } \frac{1}{{4^p }} = 0[/tex]
Then according to the test this allows me to write [tex]\sum _{p = 0} ^{\infty} 4^{-p} = 4/3[/tex]
Can anybody please verify if I'm heading in the right direction on this? Or am I totally wrong?
Sincerely Yours
Hummingbird
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