We’d love to hear from you. Comments and suggestions are very much appreciated!
Make sure you're logged into your account, and then head on over to your Subscription Management Page under your account settings. You will see a button for either cancel or subscribe. Click on the button and detailed instructions will follow.
Check out our symbols tutorial for a list of symbols that the calculator can understand.
Here are a few common symbols:
^ (Exponent: "raised to the power")
sqrt (Square Root) (Example: sqrt(9))
Yes, you can login to the mobile app with your upgraded web account to access the premium app.