sec inverse of ( sinx/x ) when x tends to zero.
I did this:
First i rewrote sec inverse as cos invrse and inverted sinx/x to x/sinx.
thus it became: cos inverse of ( x/sinx ) when x ttends to zero.
Then i applied the formula x/sinx =1 (when x->0)
Thus the answer is cos inverse of 1. OR 0.
But my textbook says its not Defined!!!????? WHY?????? :(
I did this:
First i rewrote sec inverse as cos invrse and inverted sinx/x to x/sinx.
thus it became: cos inverse of ( x/sinx ) when x ttends to zero.
Then i applied the formula x/sinx =1 (when x->0)
Thus the answer is cos inverse of 1. OR 0.
But my textbook says its not Defined!!!????? WHY?????? :(
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Your answer is correct. Are you looking at the right answer in the textbook?
The answer "not defined" isn't even a valid answer for a limit. Either the limit doesn't exist or you get a number.
Either that or you read the problem wrong. What does the problem ask you to do? Are you supposed to find the limit as x approaches zero or does it ask what it equals when x is zero. The answer to the latter would be "not defined".
The answer "not defined" isn't even a valid answer for a limit. Either the limit doesn't exist or you get a number.
Either that or you read the problem wrong. What does the problem ask you to do? Are you supposed to find the limit as x approaches zero or does it ask what it equals when x is zero. The answer to the latter would be "not defined".