IN MATH: 1. n. an operation or function which UNDOES another operation or function . EX. Addition of 5 undoes subtraction of 5.
OPERATION  ITS INVERSE  
adding  subtracting  
subtracting  adding  
multiplying  dividing  
multiplying  factoring  
squaring  squarerooting  
raising to the second power  raising to the 1/2 power  
taking the opposite  taking the opposite  
taking the reciprocal  taking the reciprocal 
number, operation, inverse, =, identity 5 + 5 = 0 5 + 5 = 0 5 times 1/5 is 1 1/5 times 5 is 1
f(x), function  f^{1}(x), inverse function 
x, do nothing  x, do nothing 
x, take opposite  x, take opposite 
1/x, or x^{1}, take reciprocal  1/x, or x^{1}, take reciprocal 
x², square  x or x^{1/2}, square root 
x, or x^{1/2}, square root  x^{2}, square 
x^{3}, cube  x^{1/3}, cube root 
sin(x), take the sine  sin^{1}(x)take the Arcsine 
sin^{1}(x)take the Arcsine  sin(x) take the sine 
cos(x), take the cosine  cos^{1}(x), take the Arccosine 
cos^{1}(x), take the Arccosine  cos(x), take the cosine 
tan(x), take the tangent  tan^{1}(x) take the Arctangent 
tan^{1}(x), take the Arctangent  tan(x), take the tangent 
... secant, cosecant, cotangent  ... Arcsecant, Arccosecant, Arccotangent 
log(x), take the common log  10^{x}, raise 10 to that power 
10^{x}, raise 10 to a power  log(x) take the common log 
ln(x), take the natural log  e^{x}, raise e to that power 
e^{x}, raise e to a power  ln(x), take the natural log 
b^{x}, raise b to a power  log_{b}(x), take a log with that base 
log_{b}(x), take a log with a certain base  b^{x}, raise that base to a power 
D_{x}(y) or dy/dx, or f'(x), take a derivative  f(x)dx, take an antiderivative 
f(x)dx, take an antiderivative  D_{x}(y) or dy/dx, or f'(x), take a derivative 
lim_{x c}f(x), take a limit  there is no inverse 

ENGLISH: 1. as defined in #1 above.
APPLICATION: (see list 280)
This is an editer version of a page from the dictionary MATH SPOKEN HERE!, published in 1995 by MATHEMATICAL CONCEPTS, inc., ISBN: 0962359351.
www.mathnstuff.com/math/spoken/here/1words/i/i25.htm 