Let `f : R^+ ->{-1, 0, 1}` defined by `f(x) = sgn(x-x^4 + x^7-x^8-1)` where sgn denotes signum function then f(x) is (1) many- one and onto (2) many-one and into (3) one-one and onto (4) one- one and into

The function f: R->R defined by f(x)=2^x+2^(|x|) is (a) one-one and onto (b) many-one and onto (c) one-one and into (d) many-one and into

The function f: R->R defined by f(x)=2^x+2^(|x|) is (a) one-one and onto (b) many-one and onto (c) one-one and into (d) many-one and into

The function f: R->R defined by f(x)=6^x+6^(|x|) is (a) one-one and onto (b) many one and onto (c) one-one and into (d) many one and into

The function f: R->R defined by f(x)=6^x+6^(|x|) is (a) one-one and onto (b) many one and onto (c) one-one and into (d) many one and into

The function f:R rarr R defined by f(x)=6+6^|x| is (a) One-one and onto , (b) Many-one and onto (c) One-one and into , (d) Many-one and into

Let f: R->R be given by f(x)=[x]^2+[x+1]-3 , where [x] denotes the greatest integer less than or equal to x . Then, f(x) is (a) many-one and onto (b) many-one and into (c) one-one and into (d) one-one and onto

Let f: R->R be given by f(x)=[x]^2+[x+1]-3 , where [x] denotes the greatest integer less than or equal to x . Then, f(x) is (a) many-one and onto (b) many-one and into (c) one-one and into (d) one-one and onto

f: NrarrN, where f(x)=x-(-1)^x . Then f is: (a)one-one and into (b)many-one and into (c)one-one and onto (d)many-one and onto

f: NrarrN, where f(x)=x-(-1)^x . Then f is: (a)one-one and into (b)many-one and into (c)one-one and onto (d)many-one and onto

f: NrarrN, where f(x)=x-(-1)^x . Then f is: (a)one-one and into (b)many-one and into (c)one-one and onto (d)many-one and onto