Question

lim[x→π/2]7cos(7x)sec(5x),what's the answer? how can i solve it?

lim[x→π/2]7cos(7x)sec(5x),what's the answer? how can i solve it?

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Homework Answers

Answer #1

We will use L'Hospital law to solve this which states that ,

If then ,

Given limit ,  

Let

Then by L'Hospital law ,

  

Hence required limit

.

.

If you have any doubt or need more clarification at any step please comment.

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