माना `f={(ab,a+b ):a, b in Z }` द्वारा परिभाषित `f,Z xx Z` का उपसमुच्चय है । क्या `f:Z rarr Z ` में एक फलन है ?

If x% of y is 150 and y% of z is 300, then the relation between x and z is : यदि y का x% 150 है और z का y% 300 है, तो x और z में क्या संबंध है ?

If f:Z rarr Z is such that f(x)=6x-11 then f is

A + B means ‘A is the mother of B’/ A+B का अर्थ है, ‘A, B की माँ है |’ A - B means ‘A is the husband of B’/ A - B का अर्थ है, ‘A, B का पिता है | A × B means ‘A is son of B’ / A × B का अर्थ है, ‘A, B का बेटा है |’ A div B means ‘A is the daughter of B’./ A div B का अर्थ है, ‘A, B की बेटी है | If , W xx Z + Y div X , then how is X related to Z? यदि W xx Z + Y div X है, तो X, Z से किस प्रकार संबंधित है ?

f : C to R : f (z) =|z| is

f: Z rarr Z, f(n)= (-1)^(n) . Find the range of f.

Let f : Z rarr Z be defined as f(n) = 3n for all n in Z . Let g : Z rarr Z be defined as g(n)= n/3 if n is a multiple of 3. g(n)= 0 if n is not a multiple of 3. Show that gof = I_z and fog ne I_Z

Let f be the subset of Z xxZ defined by f = {(a b , a + b) : a , b in Z} . Is f a function from Z to Z? Justify your answer.

Let f be the subset of Z xxZ defined by f = {(a b , a + b) : a , b in Z} . Is f a function from Z to Z? Justify your answer.