(i) there are at least two ways of describing the set {....8 ,7} is true, for example
(ii) any function with domain R X R is a binary operation is false, because a binary operation is a mathematical operation that takes two arguments and returns one result (that is, with arity two);
(iii) the graph of every function from [0,1] to R is infinite is false, since not every function is defined in the specified interval;
(iv)The function f: R --> R , defined by f(x)= x|x| , is an odd function is true
"f(-x)=-f(x)""f(-x)=-x|-x|=-x|x|=-f(x)"(v)the domain of the function f ° g ,where f(x) = √x and g(x) = √ 2-x , is [- infinity,2] is true
"f\\degree g= \\sqrt {\\sqrt{2-x}}=\\sqrt [4]{2-x}""2-x \\ge0""x \\leq2"
Comments
Leave a comment