Create a calculator using HTML, CSS, and JavaScript that can perform basic and advanced mathematical operations. It should have a user-friendly interface and support real-time input validation.
Functions to be Added
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Basic Operations:
- Addition (+)
- Subtraction (-)
- Multiplication (*)
- Division (/)
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Advanced Functions:
- Exponentiation (x^y)
- Square root (√x)
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Trigonometry:
- sin, cos, tan
- sin⁻¹, cos⁻¹, tan⁻¹
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Constants & Features:
- Pi (π)
- Euler’s number (e)
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User Interaction:
- Clear (C)
- Backspace (⌫) buttons
If the user enters a value that is not valid for a function (e.g., sin⁻¹(2) or √-1), the calculator should show an error message.