Here is a question from Osezua Ibhadode. Obviously Osezua has not yet read my response to Taiwo Atinsola. Despite that, I have given a full response which, if added to what I already posted in my response to Taiwo, ought to clear his issues. I want to encourage you to learn to type your questions properly. The equations editor in MS Word is what I use to set all my responses to the class. I also use it in preparing my notes. It is a good practice to start learning . . .

Here is the detail of the Q&A with Osezua

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