How to Use Negative Exponents on a Scientific Calculator

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SUMMARY

The discussion focuses on using negative exponents in calculations with a scientific calculator, specifically the Texas Instruments TI-30X IIS model. The formula PV = PMT * (1 - (1 + i)^-n) / i is analyzed, demonstrating how to compute present value (PV) using a negative exponent. Users are advised to check their calculator's manual for specific functions related to negative exponents and sign changes, particularly the button labeled (-), which may serve this purpose.

PREREQUISITES
  • Understanding of financial formulas, specifically present value calculations.
  • Familiarity with scientific calculators, particularly the Texas Instruments TI-30X IIS model.
  • Basic knowledge of exponents and their mathematical implications.
  • Ability to interpret calculator manuals for specific functions.
NEXT STEPS
  • Research how to perform exponentiation on the Texas Instruments TI-30X IIS calculator.
  • Learn about financial mathematics, focusing on present value and future value calculations.
  • Explore the use of negative exponents in various mathematical contexts.
  • Review the user manual for the TI-30X IIS to understand all its functions and capabilities.
USEFUL FOR

Students, financial analysts, and anyone using scientific calculators for mathematical computations, particularly in finance and investment scenarios.

krimsondane
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Homework Statement


PV = PMT *1-(1+i)^-n / i
PV = 225 * 1- (1+.0055)^-42 / .005
PV = 8417.37

How did they get this. how do you use a negative exponent on a scientific calculator.







Homework Equations





The Attempt at a Solution

 
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sorry for not using ? How did they get this? How do you use a negative exponent on a scientific calculator?
 
Does your calculator have a Change Sign button? They are sometimes marked +/-.
 
Mark44 said:
Does your calculator have a Change Sign button? They are sometimes marked +/-.

No it does not I have a texas instruments TI-30x IIS model scientific calculator with 2 lines
 
krimsondane said:

Homework Statement


PV = PMT *1-(1+i)^-n / i
PV = 225 * 1- (1+.0055)^-42 / .005
PV = 8417.37

How did they get this. how do you use a negative exponent on a scientific calculator. I have a calculator, just don't know how to use it correctly.







Homework Equations





The Attempt at a Solution



thx a lot
 

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