code: def inversecombine(expr):
      """Simplify the composition of a function and its inverse.
  
      Explanation
      ===========
  
      No attention is paid to whether the inverse is a left inverse or a
      right inverse; thus, the result will in general not be equivalent
      to the original expression.
  
      Examples
      ========
  
      >>> from sympy.simplify.simplify import inversecombine
      >>> from sympy import asin, sin, log, exp
      >>> from sympy.abc import x
      >>> inversecombine(asin(sin(x)))
      x
      >>> inversecombine(2*log(exp(3*x)))
      6*x
      """
  
      def f(rv):
          if isinstance(rv, log):
              if isinstance(rv.args[0], exp) or (
                  rv.args[0].is_Pow and rv.args[0].base == S.Exp1
              ):
                  rv = rv.args[0].exp
          elif rv.is_Function and hasattr(rv, "inverse"):
              if (
                  len(rv.args) == 1
                  and len(rv.args[0].args) == 1
                  and isinstance(rv.args[0], rv.inverse(argindex=1))
              ):
                  rv = rv.args[0].args[0]
          if rv.is_Pow and rv.base == S.Exp1:
              if isinstance(rv.exp, log):
                  rv = rv.exp.args[0]
          return rv
  
      return _bottom_up(expr, f)
  
imports: from collections import defaultdict
  from sympy.concrete.products import Product
  from sympy.concrete.summations import Sum
  from sympy.core import Basic, S, Add, Mul, Pow, Symbol, sympify, expand_func, Function, Dummy, Expr, factor_terms, expand_power_exp, Eq
  from sympy.core.exprtools import factor_nc
  from sympy.core.parameters import global_parameters
  from sympy.core.function import expand_log, count_ops, _mexpand, nfloat, expand_mul, expand
  from sympy.core.numbers import Float, I, pi, Rational
  from sympy.core.relational import Relational
  from sympy.core.rules import Transform
  from sympy.core.sorting import ordered
  from sympy.core.sympify import _sympify
  from sympy.core.traversal import bottom_up, walk
  from sympy.functions import gamma, exp, sqrt, log, exp_polar, re
  from sympy.functions.combinatorial.factorials import CombinatorialFunction
  from sympy.functions.elementary.complexes import unpolarify, Abs, sign
  from sympy.functions.elementary.exponential import ExpBase
  from sympy.functions.elementary.hyperbolic import HyperbolicFunction
  from sympy.functions.elementary.integers import ceiling
  from sympy.functions.elementary.piecewise import Piecewise, piecewise_fold, piecewise_simplify
  from sympy.functions.elementary.trigonometric import TrigonometricFunction
  from sympy.functions.special.bessel import BesselBase, besselj, besseli, besselk, bessely, jn
  from sympy.functions.special.tensor_functions import KroneckerDelta
  from sympy.integrals.integrals import Integral
  from sympy.matrices.expressions import MatrixExpr, MatAdd, MatMul, MatPow, MatrixSymbol
  from sympy.polys import together, cancel, factor
  from sympy.polys.numberfields.minpoly import _is_sum_surds, _minimal_polynomial_sq
  from sympy.simplify.combsimp import combsimp
  from sympy.simplify.cse_opts import sub_pre, sub_post
  from sympy.simplify.hyperexpand import hyperexpand
  from sympy.simplify.powsimp import powsimp
  from sympy.simplify.radsimp import radsimp, fraction, collect_abs
  from sympy.simplify.sqrtdenest import sqrtdenest
  from sympy.simplify.trigsimp import trigsimp, exptrigsimp
  from sympy.utilities.decorator import deprecated
  from sympy.utilities.iterables import has_variety, sift, subsets, iterable
  from sympy.utilities.misc import as_int
  import mpmath
label_desc: Use image node_id 17 for calling a global function with example usage: inversecombine(expr) and returns: _bottom_up, rv