The concentration, CCC, of a chemical reagent in a reaction vessel is modeled by the equation
C=52t4+0.8t,t≥1C = \frac{5}{2t^4} + 0.8^t, \quad t \ge 1C=2t45+0.8t,t≥1
where t t\,t is the time in minutes.
Find an expression for dCdt\displaystyle \frac{dC}{dt}dtdC.
Practise Edexcel A Level Maths 9.2 Differentiating exponentials and logarithms with exam-style questions for A Level Maths. 23 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.