Limit of (1-1)/h as h goes to 0?

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In summary, the limit of 1-1/h as h goes to 0 is 0. The limit of 1+h-1/h as h goes to 0 is 1. The limit of 1+a/h as h goes to 0 is also 1.
  • #1
student34
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Homework Statement



What is the limit of (1-1)/h as h goes to 0?

Homework Equations



f'(x) = Lim(h→0) (f(x+h) - f(x))/h

The Attempt at a Solution



The answer is obviously 0, but I cannot figure out exactly how they got that answer.
 
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  • #2
(1-1)/h=0
for all nonzero h
therefore
$$\lim_{h\rightarrow 0}\frac{1-1}{h}=\lim_{h\rightarrow 0}0$$
 
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  • #3
I think I stole your name, or you stole mine. ;)

Maybe it would also be helpful if you looked at this way:

When thinking about limits, h is never actually 0. We're interested in what happens as h gets so close to zero we basically treat it as such. Since what you wrote is equivalent to saying [tex] \frac {0}{.000000...1} [/tex] you can conclude that this limit is 0.

If on the other hand you had wrote:

[tex] \lim_{h\rightarrow 0}\frac{(1+h)-1}{h}= 1 [/tex]

Would be the correct interpretation of the limit.

You'll learn more about limits when you discuss the epsilon/delta definition of a limit.
 
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  • #4
Student100 said:
I think I stole your name, or you stole mine. ;)

Maybe it would also be helpful if you looked at this way:

When thinking about limits, h is never actually 0. We're interested in what happens as h gets so close to zero we basically treat it as such. Since what you wrote is equivalent to saying [tex] \frac {0}{.000000...1} [/tex] you can conclude that this limit is 0.

If on the other hand you had wrote:

[tex] \lim_{h\rightarrow 0}\frac{(1+h)-1}{h}= 1 [/tex]

Would be the correct interpretation of the limit.

You'll learn more about limits when you discuss the epsilon/delta definition of a limit.

Isn't the limit 0?
 
  • #5
The other student was comparing two different limits.

$$\lim_{h \rightarrow 0} \frac{1-1}{h}=0 \\
\lim_{h \rightarrow 0} \frac{1+h-1}{h}=1 \\
\text{both special cases of}\\
\lim_{h \rightarrow 0} \frac{1+a \, h-1}{h}=a$$
 

What is the limit of (1-1)/h as h goes to 0?

The limit of (1-1)/h as h goes to 0 is undefined. This is because as h approaches 0, the denominator becomes smaller and smaller, approaching 0. When the denominator is 0, the fraction becomes undefined.

Why is the limit of (1-1)/h as h goes to 0 undefined?

The limit of (1-1)/h as h goes to 0 is undefined because when h becomes extremely small, the fraction becomes undefined. This is because dividing by a very small number is equivalent to dividing by 0, which is undefined.

Can the limit of (1-1)/h as h goes to 0 be solved?

No, the limit of (1-1)/h as h goes to 0 cannot be solved. This is because dividing by 0 is undefined in mathematics, and as h approaches 0, the denominator becomes smaller and smaller, eventually becoming 0.

How can the limit of (1-1)/h as h goes to 0 be graphically represented?

The limit of (1-1)/h as h goes to 0 cannot be graphically represented. This is because the graph would have an asymptote at h=0, where the function would be undefined. Therefore, the graph would not be continuous and would not accurately represent the limit at h=0.

Is the limit of (1-1)/h as h goes to 0 equal to 0?

No, the limit of (1-1)/h as h goes to 0 is not equal to 0. This is because as h approaches 0, the denominator becomes smaller and smaller, causing the fraction to approach infinity. Therefore, the limit is undefined and not equal to 0.

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