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Is signum function a bijective function?
Honey, the signum function is about as bijective as a one-way street. It sure ain't bijective, because it maps every non-zero number to 1, completely ignoring the negative numbers. So, in short, signum function is not bijective, it's as one-sided as a bad Tinder date.
How do you change an exponential functions to a logarithmic function?
If y is an exponential function of x then x is a logarithmic function of y - so to change from an exponential function to a logarithmic function, change the subject of the function from one variable to the other.
Is function a noun?
Yes, the word 'function' is a noun (function, functions) as well as a verb (function, functions, functioning, functioned). Examples: Noun: The function of the receptionist is to greet visitors and answer incoming calls. Verb: You function as the intermediary between the public and the staff.
Is a function of periodic function periodic?
yes
Every continuous function is integrible but converse is not true every integrable function is not continuous?
That's true. If a function is continuous, it's (Riemman) integrable, but the converse is not true.
