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Ranked as 7670 on our all-time top downloads list with 5574 downloads.
Ranked as 3163 on our top downloads list for the past seven days with 5 downloads.

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Review

Review by  Nilo Rivera Reviewed on 2018-03-29 This program is quite original for the ticalc website regarding half-life calculators that can solve for any variable. It technically does do everything that it says and is quite easy to operate if you have plenty of patience for ads and bad algorithms. I would recommend having Cesium so that you can unlock the program and make it 10 times faster. Seriously, logarithms (esp. natural logs) could have been implemented when coming up with an algorithm instead of the unnecessary and slow "solve(" function? The "solve(" is guess and check with a few division algorithms and sometimes returns "x=0.9999999" even though the real answer is "x=1"! This is because the division algorithm approaches 1 but it doesn't recognize the limit with its algorithm. Also, when the program boots, it ruins your graph settings, clears anything you may have drawn, and bombards you with ads to Daniel15's website with the "Text(" function. If you clear the first few lines with Cesium, this is avoidable. Even when the program ends, you are left with a display of a copyright statement. It would be better if you could manipulate the result by leaving it as the answer instead of a useless copyright string. The title of the "Menu(" is longer than the width of the screen unless you use a TI-84 plus CE calculator, in which case all the ads at the beginning overlap. This program is nowhere near the best half-life calculator in my opinion and probably the opinion of every experienced programmer. If you are trying to edit the program, keep this in mind: ln(a^(b/c))=b*ln(a)/c