review

Which one is true about R={(1,3),(3,7),6,13)}?

• The domain of the relation is {3,7,13}

• The range of the relation is {1,3,6}

• The relation have 3 elements

• All are true

Let R={(x,y):y=x+5 } then what is the inverse of R?

• R^-1={x,y) y=x-5

• X+5

• y+4

• y-2

Which of the following function has All real numbers as its domain ?

• f(x)=2x^3/4

• y=|x+5|

• x=y^2

• All

If f(x)=x^-2/5 then which one is true about f(x)?

• The domain is all real numbers.

• The range is all real numbers

• The graph s increasing on (0,1).

• AAll are true

Which one is true about the graph?

• The domain is all real numbers

• The range is all real numbers

• The function may be f(x)=x^-1/2.

• All are true

Which one is true about the power function?

• The domain all power function is all real numbers.

• Power function is kx^m,where

• The range of all power function are always all real numbers

• None

Let f(x)=2x+7 and g(x)=x+1 then which one is not true?

• f(2)= 3g(2)

• (fog)(2)=13

• (gof)(2)=13

• g(2)=3

Let f(x)=2+3|x| then which one is true about f(x)?

• The domain is all real numbers.

• The range is all real numbers.

• f(-5)=13

• 

If f(x)=2-3sgnx then Which one is true about f(x)?

• f(-22)=68

• The domain is all real numbers except 0.

• 
• All are true.

Which one is true about the above function?

• The domain is all real numbers.

• The range all integers

• f(-2.5)=-6

• All are true