💯 The Definition of Inverse Functions Explained

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Best math tutoring video on youtube ever!!!!!! awesome video, understood everything!!

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thanks a lot..I appreciate it...now i understand inverse function...

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I love your intonation in speaking,makes me catch more attention.

[@jessefranckowiak]

You can speak of both inverse functions and inverse relations. In the case of an inverse function, it exists if and only if the function is a bijection. For an inverse relation, there's no requirement that the function is a bijection. Thus, an inverse relation for a given function exists even if the function is not injective.

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If you can think through all of that you are probably set for this topic

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I understan very well really tnxz lecture

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[@Maria-zr2wq]

Thank you! However I'm actually trying to figure out what the inverse of tangent function means. I understand this kind of stuff but I have a hard time figuring this out . Like if I had tan * theta= (3/2) I know to get theta I go to theta= inverse tangent ( 3/2). I just am trying to figure out what is being switched around because when I try tan(2/3) it does not give me the same answer as the inverse tangent ( 3/2)

[@Maria-zr2wq]

Actually I found it so if anyone else is trying to understand! www.mathsisfun.com/algebra/trig-inverse-sin-cos-tan.html

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Thanks for the explanation

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You have an amazing teaching skill. I've been able to understand this topic with a smile on my face, since I didn't like maths as subject. lol. Wish to get more videos on more chapters. Really awesome work, thank you very very much. ;-)

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[@LightenedOne]

f(x) = 2x +1 y = 2x + 1 ; Put "y" for "f(x)" y - 1 = 2x ; Subtract 1 from both sides 1/2(y - 1) = x ; Divide both sides by 2 Swap sides x = 1/2(y -1) ; Therefore f-1(y) = 1/2(y - 1); ( Solution (put "f-1(y)" for "x" ) Ludi Ge I can understand your notation verbally but I don't believe it is correct it has to be the way I have shown it above or an examiner won't buy it.

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Where does f(x) relqte here

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Isn't the set a relation

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