Hey guys.
I was bored and I just started fiddling around with my scientific calculator for fun.
I wrote down the equation:
x + 1 = x
And made it solve for x.
Now, I was expecting it to say x = ∞ (infinity), since ∞ + 1 = ∞
But instead, it gave out a *very* strange answer.
x = 1.667988098 * 10^13
Which, when written normally, is 16,679,880,980,000.
That's pretty messed up, because I'm pretty sure 16,679,880,980,000 + 1 = 16,679,880,980,001
How does this work? This is just an error, right? There is no way this corresponds to the rules of mathematics.
I think that maybe since all scientific calculators give answers to 10 significant figures, (and if the number has more than 10 digits then it is written in standard form/scientific notation), then maybe adding 1 won't affect the answer that shows up on the screen, when the actual value, however, has increased by 1.
I still find it intriguing that it chooses these exact numbers, even if I make it solve for x over and over again. It doesn't make sense!
What do you guys think?
It got a bit weirder afterwards. I grabbed my brother's calculator and input the *exact* same equation and made it solve for x.
It returned: x = 2
How does that make sense at all? 3 =/= 2 !
I was bored and I just started fiddling around with my scientific calculator for fun.
I wrote down the equation:
x + 1 = x
And made it solve for x.
Now, I was expecting it to say x = ∞ (infinity), since ∞ + 1 = ∞
But instead, it gave out a *very* strange answer.
x = 1.667988098 * 10^13
Which, when written normally, is 16,679,880,980,000.
That's pretty messed up, because I'm pretty sure 16,679,880,980,000 + 1 = 16,679,880,980,001
How does this work? This is just an error, right? There is no way this corresponds to the rules of mathematics.
I think that maybe since all scientific calculators give answers to 10 significant figures, (and if the number has more than 10 digits then it is written in standard form/scientific notation), then maybe adding 1 won't affect the answer that shows up on the screen, when the actual value, however, has increased by 1.
I still find it intriguing that it chooses these exact numbers, even if I make it solve for x over and over again. It doesn't make sense!
What do you guys think?
It got a bit weirder afterwards. I grabbed my brother's calculator and input the *exact* same equation and made it solve for x.
It returned: x = 2
How does that make sense at all? 3 =/= 2 !