English Language & Usage Asked on July 25, 2021
In the phrase
The quantity of insects in/at a time t is given by i(t).
What is the correct?
Thank you so much!
At
In your example “at a time” would refer to a particular moment or an instant in which we want the number of insects.
“In a time” would refer to a duration of time at the end of which we are calculating the number of insects.
I think you mean to use the former version, therefore “at a time” is what is correct according to me.
Correct answer by Natru on July 25, 2021
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