Scientific calculator

Operation English Equivalent + plus, or addition - minus or subtraction, Note: there is DIFFERENT key to make a positive number into a negative number, perhaps marked (-) or NEG known as "negation" * times, or multiply by / over, divided by, division by ^ raised to the power yx y raised to the power x Sqrt or square root ex "Exponentiate this," raise e to the power x LN Natural Logarithm, take the log of SIN Sine Function SIN-1 Inverse Sine Function, arcsine, or "the angle whose sine is" COS Cosine Function COS-1 Inverse Cosine Function, arccosine, or "the angle whose cosine is" TAN Tangent Function TAN-1 Inverse Tangent Function, arctangent, or "the angle whose tangent is" ( ) Parentheses, "Do this first" Store (STO) Put a number in memory for later use Recall Get the number from memory for immediate use

Then go see your teacher, he would likely be an excellent starting point. Ask one of your classmates who is comfortable with the calculator. Frankly, I have a very low opinion of the academic skills of mylotters so I think this is a pretty bad place to ask.