- Computer Science Engineering (CSE)
- Communication Engineering
- A function f(x) is even, when?

Q. |
## A function f(x) is even, when? |

A. | f(x) = -f(x) |

B. | f(x) = f(-x) |

C. | f(x) = -f(x)f(-x) |

D. | f(x) = f(x)f(-x) |

Answer» B. f(x) = f(-x) | |

Explanation: geometrically a function f(x) is even, if plot of the function is symmetric over y-axis. algebraically, for any function f(x) to be even, f(x) = f(-x). |

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