What is the value of n for greatest integer function to equal 2012?

In summary, the greatest integer function, also known as the floor function, rounds any decimal number down to the nearest integer. It is different from the ceiling function which rounds up to the nearest integer. It is commonly used in computer programming, engineering, and data analysis. It can be applied to negative numbers and its domain is all real numbers while its range is the set of all integers.
  • #1
juantheron
247
1
Calculate Natural no. $n$ for which $\displaystyle [\frac{n}{1!}]+[\frac{n}{2!}]+[\frac{n}{3!}]+...+[\frac{n}{10!}] = 2012$

where $[x] = $ Greatest Integer function
 
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  • #2
The function $f(n)=\left\lfloor\dfrac{n}{1!}\right\rfloor+\dots+\left\lfloor\dfrac{n}{10!}\right\rfloor$ is non-decreasing and f(1000) < 2012 < f(2000). Since $2000-1000<2^{10}$, you can find n for which f(n) = 2012 in 10 iterations using binary search, or bisection method.
 

What is the greatest integer function?

The greatest integer function, also known as the floor function, is a mathematical function that rounds any given decimal number down to the nearest integer. It is represented by the symbol ⌊x⌋.

What is the difference between greatest integer function and ceiling function?

While the greatest integer function rounds down to the nearest integer, the ceiling function rounds up to the nearest integer. This means that the ceiling function would round 2.3 up to 3, while the greatest integer function would round it down to 2.

How is the greatest integer function used in real life?

The greatest integer function is commonly used in computer programming and engineering to round down numbers to the nearest integer. It is also used in statistics and data analysis to group data into discrete categories.

Can the greatest integer function be applied to negative numbers?

Yes, the greatest integer function can be applied to negative numbers as well. For example, the greatest integer function of -3.5 would be -4, as it rounds down to the nearest integer.

What is the domain and range of the greatest integer function?

The domain of the greatest integer function is all real numbers, while the range is the set of all integers. This means that any real number can be input into the function, but the output will always be an integer.

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