The Bernoulli's equation dy +ytanx = y'sec x after multiplying dx -2y and use appropriate substitution of dz z and dx can be solve using the integrating factor

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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The Bernoulli's equation
dy
+ytanx = y'secx after multiplying
dx
-2y and use appropriate substitution of
dz
z and
dx
can be solve using the integrating factor
Transcribed Image Text:The Bernoulli's equation dy +ytanx = y'secx after multiplying dx -2y and use appropriate substitution of dz z and dx can be solve using the integrating factor
Pure Polonium-210 is a radioactive isotope that is
hazardous to the body when swallowed or inhaled
in very small amount. It has a biological half-life of
40 days. It can be deposited on broad-leaved plants
and accumulates in the lungs as people consumed it
through smoking specially for secondary
smokers. Suppose a person decide to quit smoking
and do his best to avoid secondary smoking, how
long will it take before the amount of Polonium-210
in his body reduce is to 34 percent. (unit not
needed)
Transcribed Image Text:Pure Polonium-210 is a radioactive isotope that is hazardous to the body when swallowed or inhaled in very small amount. It has a biological half-life of 40 days. It can be deposited on broad-leaved plants and accumulates in the lungs as people consumed it through smoking specially for secondary smokers. Suppose a person decide to quit smoking and do his best to avoid secondary smoking, how long will it take before the amount of Polonium-210 in his body reduce is to 34 percent. (unit not needed)
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