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How to send a math query MathWhiz recognizes the following mathematical operators:
When using operators make sure to leave a space between the operator and numbers or sets. Use 2 + 2 rather than 2+2. The following functions are supported by MathWhiz:
Use (parenthesis) for multiple operations Enclose operations and stray numbers in parenthesis:
(2 + 2) + (3 * 2)
Mistakes to avoid MathWhiz cannot divide by zero. Most times it will catch you beforehand, but sometimes you will get a plain configuration error if your zero operation is not noticed. Also, you cannot extract square roots from negative numbers. Try not to send queries that are too large. MathWhiz will only perform about 12 operations enclosed in parenthesis. In many cases, it will not even be able to perform these if the numbers are large. Break up larger calculations. Each result will be displayed in the new input box for ease in constructing new queries. Some useful equations and formulas Compound interest To figure out compound interest, use the formula: Capital x (1 x decimal interest rate^{time} = capital + interest
So, $1000 at 15 percent interest over 30 years: $1000 X (1 X .15^{30}) = $66,211.77 Length of the diagonal Doing some carpenting or landscaping?Want to figure out the length of a diagonal of a square or right triangle beforehand? The sum of the squares of the two sides is equal to the square of the diagonal: Base squared + vertical squared = diagonal squared So, if one side is 3 ft. long and the other 4 ft.: 3^{2} X 4^{2} = 20 Thus, 20 is the square of the length of the diagonal, and the length, ofcourse, is the square root of 20. Probability The odds of any series occurences happening at the same time are equal to the product of the probability of each event in the series. Thus, if there is a 50 percent chance of rain (1 in 2) at noon on Friday, and there is a 20 percent chance (1 in 5) that you will be outdoors at noon. Then, the chance of you getting wet at noon on Friday are 2 X 5, or 1 in 10. In a lottery where you choose 6 out of 64 numbers, the odds picking one number correctly are 1 in 64. The odds of picking two correctly are 64 x 64, three correctly, 64 X 64 X 64. The odds of picking all six correctly are 1 in 6.87 x 10^{10}. If you buy a 100 lottery tickets, your odds would increase to 1 in 687 million! For more help, email us at MathWhiz@AsiaPacificUniverse.com. Please tell your friends about our service!
