## Функции для формул вычисляемых ответов

Полный список математических функций, которые можно использовать при записи формул ответов в вопросах типа: Вычисляемый, Простой вычисляемый, Множественный вычисляемый (источник: http://docs.moodle.org/26/en/question/type/calculated).

FunctionExplanation
abs Absolute value
acos Arc cosine -- output in radians.
acosh Inverse hyperbolic cosine -- output in radians.
asin Arc sine -- output in radians.
asinh Inverse hyperbolic sine.-- output in radians.
atan2 Arc tangent of two variables -- pass in two values like (y, x), and you'll get the atan(y/x), adjusted to the proper quadrant. (Note: The variables are in the reverse order to atan2(x,y) in Excel) Output is radians.
atan Arc tangent -- output in radians.
atanh Inverse hyperbolic tangent-- output in radians.
bindec Binary to decimal
ceil Round fractions up
cos Cosine -- in radians!!! Convert your degree measurement to radians before you take the cos of it.
cosh Hyperbolic cosine -- in radians!!! Convert your degree measurement to radians before you take the cosh of it.
decbin Decimal to binary
decoct Decimal to octal
exp Calculates the exponent of e
expm1 Returns exp(number) - 1, computed in a way that is accurate even when the value of number is close to zero
floor Round fractions down
fmod Returns the floating-point modulus of two numbers - i.e. the remainder when the first is divided by the second.
is_finite Finds whether a value is a legal finite number
is_infinite Finds whether a value is infinite
is_nan Finds whether a value is not a number
log10 Base-10 logarithm
log1p Returns log(1 + number), computed in a way that is accurate even when the value of number is close to zero
log Natural logarithm (ln)
max Find highest value
min Find lowest value
octdec Octal to decimal
pi() Get value of pi - the function does not take an argument, like in Excel.
pow (numberToRaise, NumberRaisedTo) Exponential expression