x = 1 + ½x → ½x = 1 → x = 2.
Can’t have the same letter for the function and the variable, should be like this: y = 0.5(x) + 1
There is no function there, only an equation. And there is a single variable, “x”, that represents the price of the book.
“x = 1 + ½x” is the same as “the price of the book is $1, plus half of the price of the book”.
Ok, call it an equation or a function, it doesn’t matter what it is called, the point was that the original comment is only true for the value that was used.
In the original comment we have “x = 1 + ½x” and the example used was with a cost of two (x=2) to show that the equation was true (ending in 2=2).
However if 4 is used instead (x=4) then we have ( 4 = 1 + ½[4] ) which results in an inequality (4=3) which is false.
Which is why I initially commented with a different letter on either side of the equal sign.
If you prefer to only put the value of x on the right side on the equal sign and not the left side, then a common notation for that is f(x) = 1 + ½x, which is also referred to as function notation.
Ok, call it an equation or a function, it doesn’t matter what it is called
What it is called does matter because a function obligatorily maps one set of values into another set of values, and that is not what I was doing because IDGAF about a full set dammit, but a single value that symbolises a price where OP’s statement is true.
However if 4 is used instead (x=4) then we have ( 4 = 1 + ½[4] ) which results in an inequality (4=3) which is false.
As even 11yos know, but apparently not you, you don’t solve an equation (or a set of equations) by arbitrarily assigning values to the variable.
If you prefer to only put the value of x on the right side on the equal sign and not the left side, then a common notation for that is f(x) = 1 + ½x, which is also referred to as function notation.
Congrats for not getting a value but a slope. 👍 /s
Juuuuuuuuuuuuust in case that your confusion is related to my usage of “→”: it’s clear by context that the symbol is being used for “implies”.
- This discussion is incredibly funny, because it is a discussion.
- I personally prefer the equivalence (⇔) over the implication (⇒) since I like to emphasize that the statement is true in both directions. Well and having an incorrect base leads to funny statements on implications:
x = x/2 ⇒ x = πis true.
It’s N equation and not a function…
It costs nothing because you get it from LibGen.
$3.50
The same question was posted yesterday. Are you a bot fishing for engagement?
It’s actually chatGPT and it just figured out outsourcing the questions to lemmy is more computationally efficient than burning through a few dozen video cards to derive the answer.
Yes, Dave.
This question was popular on Reddit few days ago.
$1.50
