Categories
Tags
Functions
New post in Functions
Removable discontinuity question
August 1st, 2022
definition
functions
How to approximate $\sin(x)$ using Padé approximation?
August 1st, 2022
matlab
numerical-methods
functions
calculus
pade-approximation
$f(x) = 0$ when $x$ is $0$, and $1$ otherwise
August 1st, 2022
binary
boolean-algebra
functions
if $\ f(f(x))= x^2 + 1$ , then $\ f(6)= $?
August 1st, 2022
functional-equations
functions
Solve for $f(x)$ if $f(f(x))=6x-f(x)$
August 1st, 2022
algebra-precalculus
functions
functional-equations
Understanding the difference between pre-image and inverse
August 1st, 2022
definition
functions
inverse
inverse-function
What is the practical benefit of a function being injective? surjective?
August 12th, 2022
functions
elementary-set-theory
Technical name for "many-to-many" mappings
August 1st, 2022
functions
bijection between $\mathbb{N}$ and $\mathbb{N}\times\mathbb{N}$
August 1st, 2022
elementary-number-theory
elementary-set-theory
functions
Is there a systematic way of solving cubic equations?
September 27th, 2022
functions
Complex Analysis: Continuity of Function
August 1st, 2022
functions
complex-analysis
Is this proof sufficient to show that a concave function of a metric is also a metric?
August 2nd, 2022
real-analysis
functions
metric-spaces
$f^2(x)$ vs $f(x)^2$ vs $f(x^2)$
August 9th, 2022
functions
notation
algebra-precalculus
Let $f(x)$ be a polynomial of degree $8$ such that $f(r)=\frac1r$, for $r=1,2,3,\ldots,9$. Find $\frac1{f(10)}$.
August 4th, 2022
polynomials
solution-verification
functions
algebra-precalculus
Intersection of Images of a function
March 14th, 2020
functions
elementary-set-theory
Counting 1:1 and onto functions
November 25th, 2020
discrete-mathematics
functions
algebra-precalculus
combinatorics
Difference between "real functions" and "real-valued functions"
August 1st, 2022
intuition
functions
definition
Can floor functions be used to "cycle" between values?
August 1st, 2022
functions
ceiling-and-floor-functions
What are some standard methods for solving functional equations?
August 1st, 2022
functional-equations
functions
Created a function with roots at primes and only primes, are there useful applications?
August 1st, 2022
functions
number-theory
elementary-number-theory
prime-numbers
Construct an example of a function with period 1 which is not a trig function and is differentiable at every point.
August 1st, 2022
calculus
functions
Normalisation using Softmax- What advantage does exponential provide
August 1st, 2022
statistics
functions
Why is there no continuous square root function on $\mathbb{C}$?
August 1st, 2022
complex-analysis
functions
Restriction of smooth maps between manifolds
August 1st, 2022
functions
smooth-manifolds
differential-geometry
Is $f(x)=|x|$ a convex function?
August 19th, 2022
functions
Maximum of the Variance Function for Given Set of Bounded Numbers
August 1st, 2022
statistics
probability
functions
variance
analysis
Half iteration of exponential function
August 1st, 2022
systems-of-equations
function-and-relation-composition
tetration
functions
exponentiation
Sufficient / necessary conditions for $g \circ f$ being injective, surjective or bijective
December 12th, 2020
functions
elementary-set-theory
Find the sum-of-products expansions
August 27th, 2022
functions
Proof that composite function does not exist.
June 3rd, 2020
functions
proof-explanation
←
1
2
…
91
92
93
94
95
96
97
98
99
→