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.
It costs nothing because you get it from LibGen.
The same question was posted yesterday. Are you a bot fishing for engagement?
$1.50
$3.50
