Some features of Wolfram|Alpha
here are the basic features that underlie WolframAlpha service “- It is free
- It does not need any login or sign up
- It interprets your input in a smart way and generate appropriate results
- It provides formulas and calculators
- It has buttons and pull-down menues to help you change what is displayed
- It provides pods with links to more information
- It has dog ears for extra information
- It also provides sources , references , and background information for extra links