In the answer, the third last step, e^0.5a≈19 is wrong. If a=5, e^0.5*5 should equals to 12.18, which around 12 instead of 19. <img width="1011" alt="image" src="https://github.com/DE1-Engineering-Mathematics/module-resources/assets/148073231/f4a8b62a-9862-4a7b-9455-63e7e102ba99">  Helen Gao
In the answer, the third last step, e^0.5a≈19 is wrong. If a=5, e^0.5*5 should equals to 12.18, which around 12 instead of 19.
Helen Gao