Skip to content

Course home

3.5.2 Differentiation (A-level only)

3.5.2 Differentiation (A-level only)

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798
Question 74

A scientist models the activity, AAA MBq, of a radioactive isotope over time, ttt days, using the equation

A=(15t+2)e−0.4t,t≥0 A = (15t + 2)e^{-0.4t}, \quad t \ge 0 A=(15t+2)e−0.4t,t≥0

Find, using calculus, the exact value of ttt for which the activity is stationary.

[4]
Markscheme

3.5.2 Differentiation (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.5.2 Differentiation (A-level only)

109 exam-style questions on CCEA A Level Maths 3.5.2 Differentiation (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank