Science:Math Exam Resources/Courses/MATH103/April 2015/Question 01 (d) (ii)
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Question 01 (d) (ii) 

Consider the following differential equations. Check whether the statement is true or false. (ii) is a solution to . 
Make sure you understand the problem fully: What is the question asking you to do? Are there specific conditions or constraints that you should take note of? How will you know if your answer is correct from your work only? Can you rephrase the question in your own words in a way that makes sense to you? 
If you are stuck, check the hint below. Consider it for a while. Does it give you a new idea on how to approach the problem? If so, try it! 
Hint 

Apply a similar step to part (i). What does it mean that a certain function is a solution of a given equation? 
Checking a solution serves two purposes: helping you if, after having used the hint, you still are stuck on the problem; or if you have solved the problem and would like to check your work.

Solution 

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Please rate my easiness! It's quick and helps everyone guide their studies. where , so we apply the chain rule to find . , on the other hand,
where we used the properties: and . Therefore, we have . 