U L?h@shddlmZddlmZddlmZddlmZmZddl m Z ddl m Z ddZ d d Zd d Zd S))Functionsympify)tanh)cossin)limit)xcCsXGdddt}|ttddtttddks8tt|tttddksTtdS)zCreate our new "sin" function.c@s"eZdZdddZeddZdS)z*test_function_series1..my_functioncSst|jdSNr)rargsselfZargindexra/var/www/html/venv/lib/python3.8/site-packages/sympy/functions/elementary/tests/test_interface.pyfdiffsz0test_function_series1..my_function.fdiffcSst|}|dkrtdSdSr rclsargrrrevalsz/test_function_series1..my_function.evalN)r __name__ __module__ __qualname__r classmethodrrrrr my_functions rr r N)rr seriesrAssertionErrorr)rrrrtest_function_series1 s (rcCs<Gdddt}|ttddtttddks8tdS)zCreate our new "cos" function.c@s"eZdZdddZeddZdS)z+test_function_series2..my_function2r cSst|jd Sr )rr r rrrr#sz1test_function_series2..my_function2.fdiffcSst|}|dkrtdSdS)Nrr rrrrrr&sz0test_function_series2..my_function2.evalN)r rrrrr my_function2!s r rrN)rr rrr)r rrrtest_function_series2s r!csHGfdddttt}t}|tdd|tddksDtdS)a_ Test our easy "tanh" function. This test tests two things: * that the Function interface works as expected and it's easy to use * that the general algorithm for the series expansion works even when the derivative is defined recursively in terms of the original function, since tanh(x).diff(x) == 1-tanh(x)**2 cs&eZdZdfdd ZeddZdS)z%test_function_series3..mytanhr csd|jddS)Nr r)r r mytanhrrr=sz+test_function_series3..mytanh.fdiffcSst|}|dkrtdSdSr rrrrrr@sz*test_function_series3..mytanh.evalN)r rrr#rrr$;sr$rN)rrr rr)efrr#rtest_function_series30s  r(N)Zsympy.core.functionrZsympy.core.sympifyrZ%sympy.functions.elementary.hyperbolicrZ(sympy.functions.elementary.trigonometricrrZsympy.series.limitsrZ sympy.abcr rr!r(rrrrs