## Discussion Forum

Que. | The functions mapping R into R are defined as: f(x) = x^3-4x, g(x)=1/(x^2+1) and h(x)=x^4 Then find the value of the following composite functions: hog(x) and hogof(x) |

a. | (x^2+1)^4 and [(x^3-4x)^2+1]^4 |

b. | (x^2+1)^4 and [(x^3-4x)^2+1]^-4 |

c. | (x^2+1)^-4 and [(x^3-4x)^2+1]^4 |

d. | (x^2+1)^-4 and [(x^3-4x)^2+1]^-4 |

Answer:(x^2+1)^-4 and [(x^3-4x)^2+1]^-4 |