Natural logarithm in matlab

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Help Center Help Center. If you want negative and complex numbers to return error messages rather than return complex results, use reallog instead. Input array, specified as a scalar, vector, matrix, multidimensional array, table, or timetable. Logarithm values, returned as a scalar, vector, matrix, multidimensional array, table, or timetable. For complex and negative real values of X , Y is complex. The data type of Y is the same as that of X.

Natural logarithm in matlab

Help Center Help Center. Array X must contain only nonnegative real numbers. The size of Y is the same as the size of X. If X is a table or timetable, then Y is a table or timetable. Input, specified as a scalar, vector, matrix, multidimensional array, table, or timetable. The values in X must be nonnegative and real. Data Types: single double table timetable. This function fully supports tall arrays. For more information, see Tall Arrays. This function fully supports thread-based environments. If the output of the function running on the GPU can be complex, then you must explicitly specify its input arguments as complex. This function fully supports distributed arrays. The reallog function can calculate on all variables within a table or timetable without indexing to access those variables. All variables must have data types that support the calculation.

Paul on 29 May

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Help Center Help Center. If you want negative and complex numbers to return error messages rather than return complex results, use reallog instead. Input array, specified as a scalar, vector, matrix, multidimensional array, table, or timetable. Logarithm values, returned as a scalar, vector, matrix, multidimensional array, table, or timetable. For complex and negative real values of X , Y is complex.

Natural logarithm in matlab

The natural logarithm of a number is its logarithm to the base of the mathematical constant e , which is an irrational and transcendental number approximately equal to 2. This is done particularly when the argument to the logarithm is not a single symbol, so as to prevent ambiguity. The natural logarithm of x is the power to which e would have to be raised to equal x.

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Based on your location, we recommend that you select:. You may receive emails, depending on your communication preferences. In matlab , log x means ln x. Other MathWorks country sites are not optimized for visits from your location. No, overwrite the modified version Yes. I tried following:. Please try Google next time before you ask a question and have a look here. Commented: Walter Roberson on 31 May Accepted Answer: John D'Errico. Walter Roberson on 28 May Search MathWorks. If exp 1 is not exactly e and therefore log exp 1 should not be exactly 1 then log exp 1 would have to be some other number. I actually tried google before posting and got following: MathWorks. Tags natural log matlab function. Sign in to comment.

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God bless you. Search MathWorks. Off-Canvas Navigation Menu Toggle. In matlab, the general log without radix is equivalent to natural logarithm e. Based on your location, we recommend that you select:. Search MathWorks. Input, specified as a scalar, vector, matrix, multidimensional array, table, or timetable. Accepted Answer. Do you want to open this example with your edits? Unable to complete the action because of changes made to the page. Version History Introduced before Ra expand all Ra: Perform calculations directly on tables and timetables The log function can calculate on all variables within a table or timetable without indexing to access those variables. Vote 0. Error using reallog.