i'm so happy i found this forum
i'm learning differential equations course and i purchase casio fx-991ES
and now i don't really know how to use it to my propose
i need to do for now 3 things : integrals , derivative and find fractions in polonium
so for the first thing this is the equation i need to solve :
![Posted Image](http://lh5.ggpht.com/_LmDpvIuXQnY/SydLhb9ciAI/AAAAAAAAMgY/P6HyGW2-CJU/Screen%20shot%202009-12-15%20at%2010.28.29.png)
like you can see i need to do integral to both sides and i see in the fx there's the integral button but i tried and tried and i can't figure how to do it....
for the second thing i need to find fractions to some poloniums like in this 3 examples : (i all ready did it with out the fx but i want to be able to use the fx to find this fractions)
![Posted Image](http://lh4.ggpht.com/_LmDpvIuXQnY/SydLhsgWS6I/AAAAAAAAMgc/Gznx_I1V4U4/Screen%20shot%202009-12-15%20at%2010.33.50.png)
for the last thing i need is to solve derivative like in this example :
![Posted Image](http://lh5.ggpht.com/_LmDpvIuXQnY/SydPJ2b6XkI/AAAAAAAAMg8/KsXfQfO_ssM/Screen%20shot%202009-12-15%20at%2010.55.26.png)
tanks a lot for all of you