Brain weight B  as a function of body weight W in fish hasbeen modeled by the power function B= 0.007W2/3 ,where B  and  W are measured in grams. A model for bodyweight as a function of body length L (measured in centimeters)is W =0.12L2.53 . If, over 10 million years, the averagelength of a certain species of fish evolved from 15 cmto 20 cm at a constant rate, how fast was this species’ braingrowing when the average length was 18 cm?

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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.