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Differential Equations by Pearson
book

Differential Equations by Pearson

by E. Rukmangadachari
May 2024
Intermediate to advanced content levelIntermediate to advanced
472 pages
13h 25m
English
Pearson India
Content preview from Differential Equations by Pearson
Diff erential Equations of First Order and First Degree 2-79
3. If the temperature of the air is 20°C and the temperature of a
body drops from 100°C to 75°C in 10 min. what will be its tem-
perature after 30 min? When will the temperature be 30°C?
Ans: 46°C, 55.5 min
4. Uranium disintegrates at a rate proportional to the amount pres-
ent at any instant. If m
1
and m
2
gms of uranium are present at
time t
1
and t
2
, respectively. Show that the half-life of uranium is
(
)
21 1 2
[( )log 2] / log / .tt mm
5. The rate at which bacteria multiply is proportional to the instan-
taneous number present. If the original number doubles in 2 hrs,
in how many ...
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Publisher Resources

ISBN: 9781299487406Publisher Website