Use scientific notation, powers, roots, exp and log

01

Press these keys

2nd,^2ndx²LOGLN

02

Walkthrough

1
Scientific notation
Enter the coefficient, then 2nd → , (EE), then the integer exponent.
2
Powers and roots
Use ^ for a power; 2nd → x² opens √(. Use MATH for nth-root.
3
Logs
Use LOG for base 10 and LN for base e. Their 2nd functions are 10^x and e^x.

03

Worked example

Evaluate ln(12) and 3.2×10⁻⁴.

NORMAL FLOAT AUTO REAL MPln(12)2.484906653.2E−4.00032

Answerln(12) ≈ 2.48491; 3.2×10⁻⁴ = 0.00032.