UPVOTE. This is a huge parts of our final standing and I really have to understand this. Thank you! Notes! - Do not forget to include proper units in solving. Use days as a unit of time in this problem. - Show complete step-by-step solution, fully indicating boundary conditions and equations used. [Problem] The radioactive isotope Indium-111 is often used for diagnosis and imaging in nuclear medicine. Its half life is 2.82 days. The mass in 2 weeks was 5g. a. What was the initial mass of the isotope before decay? b. How long will it take to reduce the substance to 4.55% of its initial value?

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.