- #1
hominid
- 10
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Why are my problems written as "sub x" and "sub 0"
I am doing population tables in math where x represents age. L sub x represents survivor ship at age x. m sub x represents fecundity at age x.
My question is, why is x always "sub x"? There is a an equation [tex]R_0 = \sum_{x_first}^{x_last} L_x m_x=population-replacement-rate[/tex]
What I don't understand is how can [tex]R_0[/tex] be variable. I see that when [tex]R_0=1[/tex] there is no growth. And my professor said that this allows us to simply say that [tex]r=0[/tex]=no population growth. But I am thoroughly confused
Homework Statement
I am doing population tables in math where x represents age. L sub x represents survivor ship at age x. m sub x represents fecundity at age x.
My question is, why is x always "sub x"? There is a an equation [tex]R_0 = \sum_{x_first}^{x_last} L_x m_x=population-replacement-rate[/tex]
What I don't understand is how can [tex]R_0[/tex] be variable. I see that when [tex]R_0=1[/tex] there is no growth. And my professor said that this allows us to simply say that [tex]r=0[/tex]=no population growth. But I am thoroughly confused
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