`12 8^(- 2/7)-(62 5^(- 3))^(- 1/4)+14(2401)^(- 1/4)`

Using appropriate properties find : (2)/(5) xx ((-3)/(7)) - (1)/(6) xx (3)/(2) + (1)/(14) xx (2)/(5) = (2)/(5) xx ((-3)/(7)) + (1)/(14) xx (2)/(5) - (1)/(cancel6) xx (cancel 3)/(2) = (2)/(5) xx ((-3)/(7) + (1)/(14) ) - (1)/(4) = (2)/(5) xx ((-6+1)/(14))- (1)/(4) = (cancel 2)/(cancel 5) xx (-cancel 5)/(cancel14) - (1)/(4) = (-1)/(7) - (1)/(4) (- 4 - 7)/(28) = (-11)/(28)

(12 3/5 -: 1 4/5)xx(1/8 of 1 1/7)-: 1 5/9

(1)/((2(1)/(3)))+(1)/((1(3)/(4))) is equal to (a) (7)/(14) (b) (12)/(49) (c) 4(1)/(12) (d) None of these

15 1/2-(12/5xx5/8+(7-:1 3/4))xx2=

(5)/(8)+(1)/(4)+(7)/(12)=?

The value of [[(2401)^(-1//2)]^(-1//4)]^(2) is

(4)/(1.3)-(6)/(2.4)+(12)/(5.7)-(14)/(6.8)+….=

(4)/(1.3)-(6)/(2.4)+(12)/(5.7)-(14)/(6.8)+….=

Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range: (i) {(2,1), (3,1),(4,2)} (ii) {(2,2),(2,4),(3,3),(4,4)} (iii) {(2,1),(5,1),(8,1),(11,2),(14,2),(17,2)} (iv) {(1,2),(2,3),(3,4),(4,5),(5,6),(6,7)} (v){(2,1),(4,2),(6,3),(8,4),(10,5)} (vi) {(1,2),(2,3),(3,4),(3,5),(3,7),(4,8)}

Check which of the following is a function ( i ){(2,1),(4,2),(6,3),(8,4),(10,5),(12,6),(14,7)} (ii) {(-4,4),(4,4),(3,2)}