Mathematics, 22.11.2019 00:31, dhhdndnd
Heating metal lowers its density. suppose an iron rod is made from 1kg of iron. heat is applied to one end so that the linear density of the rod x centimeters from that end is p(x)=1+x kg / 50 cm. how long is the rod?
Answers: 2
![\frac{1}{50}[\frac{(1+x)^2}{50}]\Big|^L_0=1](/tpl/images/0385/4069/a63a2.png)
![\frac{1}{100}[(1+L)^2-(1-0)^2]=1](/tpl/images/0385/4069/a6c03.png)
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Heating metal lowers its density. suppose an iron rod is made from 1kg of iron. heat is applied to o...
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