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#1 Maths Is Fun - Suggestions and Comments » inverse function & swapping x /y elements.... » 2020-05-03 13:10:37

ben1
Replies: 1

The question of why y and x should better be switched in doing an inverse function such as:

f(x) =  y = 2x+3
and its inverse
f-1(y)=  x =(y-3)/2,

we may consider that nstead of switching x & y , we could hang on to our inverse function as is and apply coordinate pairs with y as our independent and x as our dependent variables…

...& at the time of plotting our coordinate pairs to sketch the graph of our inverse function , it’d be reasonable to treat the x-axis as y-axis , our new independent variable, and y-axis as x-axis, the new dependent variable.

Ben Hidaji

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