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Questions tagged [exponent]

Exponentiation is a mathematical operation, written as b raised to the power of n, involving two numbers, the base b and the exponent (or power) n.

Exponentiation refers to the mathematical operation involving two numbers, one is a base and another is an exponent. It is repeated multiplication. To calculate 53 you have to multiply the number 5 (base) by itself 3 times (exponent).

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Is there an exponent operator in C#?

For example, does an operator exist to handle this? float Result, Number1, Number2; Number1 = 2; Number2 = 2; Result = Number1 (operator) Number2; In the past the ^ operator has served as an exponential operator in other languages, but in C# it…
Charlie
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Parse a Number from Exponential Notation

I need to parse the string "1.2345E-02" (a number expressed in exponential notation) to a decimal data type, but Decimal.Parse("1.2345E-02") simply throws an error
Jimbo
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Exponentiation in Haskell

Can someone tell me why the Haskell Prelude defines two separate functions for exponentiation (i.e. ^ and **)? I thought the type system was supposed to eliminate this kind of duplication. Prelude> 2^2 4 Prelude> 4**0.5 2.0
skytreebird
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Does Java have an exponential operator?

Is there an exponential operator in Java? For example, if a user is prompted to enter two numbers and they enter 3 and 2, the correct answer would be 9. import java.util.Scanner; public class Exponentiation { public static double powerOf…
user3362992
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JSON standard - floating point numbers

I am wondering whether the following floating point notation is a valid JSON notation: "result":{"base_fee":1e-005} or should the exponent notation be replaced with a decimal notation?
ThePiachu
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Optimizations for pow() with const non-integer exponent?

I have hot spots in my code where I'm doing pow() taking up around 10-20% of my execution time. My input to pow(x,y) is very specific, so I'm wondering if there's a way to roll two pow() approximations (one for each exponent) with higher…
Cory Nelson
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UNIX sort with exponential values?

I have a csv file with 7 fields of data. I want to sort the 7th field in reverse numerial order (smallest values first). The 7th field of data looks like this: 0.498469643137 1 6.98112003175e-10 9.11278069581e-06 I have tried to use the UNIX sort…
drbunsen
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Python and Powers Math

I've been learning Python but I'm a little confused. Online instructors tell me to use the operator ** as opposed to ^ when I'm trying to raise to a certain number. Example: print 8^3 Gives an output of 11. But what I'm look for (I'm told) is more…
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Why does python add an 'L' on the end of the result of large exponents?

If you've noticed, python adds an L on to the end of large exponent results like this: >>> 25 ** 25 88817841970012523233890533447265625L After doing some tests, I found that any number below 10 doesn't include the L. For example: >>> 9 **…
NotAGoodCoder
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Number of digits in exponent

Is it possible to set the number of digits to be used for printing the exponent of a floating-point number? I want to set it to 3. Currently, f = 0.0000870927939438012 >>> "%.14e"%f '8.70927939438012e-05' >>> "%0.14e"%f '8.709279e-005' What I want…
nmadzharov
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Why do we bias the exponent of a floating-point number?

I'm trying to wrap my head around this floating point representation of binary numbers, but I couldn't find, no matter where I looked, a good answer to the question. Why is the exponent biased? What's wrong with the good old reliable two's…
so.very.tired
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OEIS A002845: Number of distinct values taken by 2^2^...^2 (with n 2's and parentheses inserted in all possible ways)

I am looking for a reasonably fast algorithm to calculate terms of the OEIS sequence A002845. Let me restate its definition here. Let ^ denote the exponentiation operator. Consider expressions of the form 2^2^...^2 having n 2's with parentheses…
Vladimir Reshetnikov
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Using fractional exponent with bc

bc, a Linux command-line calculator, is proficient enough to calculate 3^2 9 Even a negative exponent doesn't confuse it: 3^-2 0.11111 Yet it fails when it encounters 9^0.5 Runtime warning (func=(main), adr=8): non-zero scale in exponent How…
Antony Hatchkins
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Rounding to a power of 10

I have a variable, tauMax, that I want to round up to the nearest power of ten(1, 10, 100, 1000...). I am using the below expression to find the closest integer to the max value in the tau array. I am finding the max value because I am trying to…
Alex Nichols
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SAS function for using 'power' / exponential

I may be missing something obvious, but how do you calculate 'powers' in SAS? Eg X squared, or Y cubed? what I need is to have variable1 ^ variable2, but cannot find the syntax... (I am using SAS 9.1.3)
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