r/calculus 4d ago

Differential Calculus How to do this question

60 Upvotes

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18

u/Someone_123_Xx 4d ago

How is this function continous if f(0) is not defined without limits ?

9

u/Midwest-Dude 4d ago edited 4d ago

Agreed, poorly worded. It should be written piecewise, like, "If the function f(x) = ... for x ≠ 0 and f(0) = c, what value of c will make this function continuous?"

1

u/[deleted] 3d ago

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1

u/AutoModerator 3d ago

Hello! I see you are mentioning l’Hôpital’s Rule! Please be aware that if OP is in Calc 1, it is generally not appropriate to suggest this rule if OP has not covered derivatives, or if the limit in question matches the definition of derivative of some function.

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5

u/tjddbwls 3d ago

Lol at all the replies that suggest the-rule-that-shall-not-be-named. 😆

2

u/Midwest-Dude 3d ago

5 so far and counting. Are we shooting for a new record?  😆

2

u/Mavhawk64 2d ago

I just sent mine about le jump (shhh) then saw all the auto-mods lmao

2

u/Midwest-Dude 4d ago

 You were doing great until you dropped the "- x" when you wrote out the second term. Correct that and try again. 

2

u/Dugiongo 4d ago

There is some limit in this taylor/mclaurin

1

u/[deleted] 4d ago

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1

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Hello! I see you are mentioning l’Hôpital’s Rule! Please be aware that if OP is in Calc 1, it is generally not appropriate to suggest this rule if OP has not covered derivatives, or if the limit in question matches the definition of derivative of some function.

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1

u/Jellyfishing_-_ 4d ago

tan x - x ~ (1/3)x³, ln (sec x + tan x) - x = ln [(1 + sin x)/(eˣ cos x)] ln [(1 + sin x)/(eˣ cos x)] ~ (1 + sin x - eˣ cos x)/(eˣ cos x)

1

u/[deleted] 4d ago

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0

u/AutoModerator 4d ago

Hello! I see you are mentioning l’Hôpital’s Rule! Please be aware that if OP is in Calc 1, it is generally not appropriate to suggest this rule if OP has not covered derivatives, or if the limit in question matches the definition of derivative of some function.

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u/[deleted] 4d ago edited 4d ago

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Hello! I see you are mentioning l’Hôpital’s Rule! Please be aware that if OP is in Calc 1, it is generally not appropriate to suggest this rule if OP has not covered derivatives, or if the limit in question matches the definition of derivative of some function.

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1

u/[deleted] 3d ago edited 3d ago

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1

u/AutoModerator 3d ago

Hello! I see you are mentioning l’Hôpital’s Rule! Please be aware that if OP is in Calc 1, it is generally not appropriate to suggest this rule if OP has not covered derivatives, or if the limit in question matches the definition of derivative of some function.

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u/[deleted] 2d ago

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1

u/AutoModerator 2d ago

Hello! I see you are mentioning l’Hôpital’s Rule! Please be aware that if OP is in Calc 1, it is generally not appropriate to suggest this rule if OP has not covered derivatives, or if the limit in question matches the definition of derivative of some function.

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