# Using MAcalc Pro

## Special keys

- Press and hold the Del key for 1 second to "clear X"
- Press and hold the Rcl key for 1 second to view all storage registers
- Press Fn to change the function set
- To change mode press Mode
- Moving the iPhone/iPod to a horiozontal position with the screen facing down erases all calculator registers.
- To switch from Interger to Floating point and vice-versa, "swipe" the calculator display area or use the Mode key.
- Tap the display area for clipboard copy.
- In RPN mode, double tap the display area to view the stack registers.

## Simple Arithmetic

To calculate 13 + 2 do:

- RPN:
- Algebraic:

13 |
Enter | 2 |
+ |

13 |
+ | 2 |
= |

- RPN:
- Algebraic:

2 |
Enter | 5 |
Enter | 1 |
- | + |

2 |
÷ | ( | 5 |
- | 1 |
) | = |

## Combination and Permutaion

Combination of 16 items in groups of 3: (result = 560)

- RPN:
- Algebraic:

16 |
Enter | 3 |
Cy,x |

16 |
Cy,x | 3 |
= |

Permutation of 16 items in groups of 3: (result = 3360)

- RPN:
- Algebraic:

16 |
Enter | 3 |
Py,x |

16 |
Py,x | 3 |
= |

Time Value of Money

You have payed-up $5,000 for an insurance policy that pays 5.35% compounded annually. What is the future value in 14 years? (result = $10,371.79)

Cfin | (clear financial registers) | ||

14 |
Sto | n | |

5.35 |
Sto | i | |

5000 |
+/- | Sto | PV |

FV | (compute future value) |

Instead of entering n, i and PV using calculator keys, their values could have been entered using the Edit key.

You got a $35,000 loan at 10.5% interest. Paying $325 every
month, how many payments are required to pay off the loan?
(result = 328 payments)

Cfin | (clear financial registers) | ||

10.5 |
12÷ | (divide by 12 and store in i register) | |

35000 |
Sto | PV | |

325 |
+/- | Sto | PMT |

n | (compute number of payments) |

Cash Flow

You bought a house for $80,000, kept it for 5 years and sold for $ 130,000. Assumming a return of 13% and the following cash flow: -80000, -500, 4500, 5500, 4500, 130000, compute NPV (result = 212.18)

Cfin | (clear financial registers) | ||

80000 |
+/- | CFo | |

500 |
+/- | CFj | |

4500 |
CFj | ||

5500 |
CFj | ||

4500 |
CFj | ||

130000 |
CFj | ||

13 |
i | ||

NPV | (compute NPV) |

Instead of entering i and CF values using calculator keys, thy could have been entered using the Edit key.

Percentage

The electricity bill fell from $58.50 to $53.25. What is the percentage change? (result = -8.97)

- RPN:
- Algebraic:

58.5 |
Enter | 53.25 |
Δ% |

58.5 |
Δ% | 53.25 |
= |

A company posted sales of $2.36 million in Asia bringing the worldwide total to $7.95 million. What percentage of the total sales ocurred in Asia? (result = 29.69)

- RPN:
- Algebraic:

7.95 |
Enter | 2.36 |
%T |

7.95 |
%T | 2.36 |
= |

Statistics

Calculate mean hours and sales for the following table: (result = 40.00 and 21,714.29)

Calculate standard deviation (result = 4,820.59 and 6.03)

Person | Hours | Sales |
---|---|---|

1 | 32 | $17000 |

2 | 40 | $25000 |

3 | 45 | $26000 |

4 | 40 | $20000 |

5 | 38 | $21000 |

6 | 50 | $28000 |

7 | 35 | $15000 |

- RPN:
- Algebraic: Instead of "Enter"

C Σ | (clear statistics registers) | ||

32 |
Enter | 17000 |
Σ + |

40 |
Enter | 25000 |
Σ + |

45 |
Enter | 26000 |
Σ + |

40 |
Enter | 20000 |
Σ + |

38 |
Enter | 21000 |
Σ + |

50 |
Enter | 28000 |
Σ + |

35 |
Enter | 15000 |
Σ + |

μ | (compute mean) | ||

σ | (compute standard deviation) |

35 |
Enter | 15000 |
Σ + |

35 |
+ | 15000 |
Σ + |

Dates

Today:

- RPN:
- Algebraic:

0 |
Enter | 0 |
Date |

0 |
Date | 0 |
= |

Date + days:

- RPN:
- Algebraic:

20090115 |
Enter | 5 |
Date |

20090115 |
Date | 5 |
= |

Days between dates:

- RPN:
- Algebraic:

20090115 |
Enter | 20090110 |
Δdys |

20090115 |
Δdys | 20090110 |
= |

Using storage registers

MAcalc Pro has 100 storage
registers (00 through 99).Note: MAcalc Pro can be configured to work with 10 storage registers. In that case registers will be accessed with a single digit (0 through 9).

- Press and hold the Rcl key for 1 second to view all storage registers
- Storing number 25 in register 12:
- Recalling register 12:

25 |
Sto | 12 |

Rcl | 12 |