Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In mathematics, the Pfaffian functions are a certain class of functions introduced by Askold Georgevich Khovanski¿ in the 1970s. They are named after German mathematician Johann Pfaff. Some functions, when differentiated, give a result which can be written in terms of the original ...Täielik kirjeldus
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In mathematics, the Pfaffian functions are a certain class of functions introduced by Askold Georgevich Khovanski¿ in the 1970s. They are named after German mathematician Johann Pfaff. Some functions, when differentiated, give a result which can be written in terms of the original function. Perhaps the simplest example is the exponential function, f(x) = ex. If we differentiate this function we get ex again, that is f^prime(x)=f(x). Another example of a function like this is the reciprocal function, g(x) = 1/x. If we differentiate this function we will see that g^prime(x)=-g(x)^2. Other functions may not have the above property, but their derivative may be written in terms of functions like those above. For example if we take the function h(x) = exlog(x) then we see EDIA articles!