code: def compute_approx_support_of_exp_kernel(a, b, eps):
      return np.maximum(
          0.0, np.squeeze(np.max(-np.log(eps / (a * b)) / b))
      )
  
imports: import unittest
  import numpy
  from tick.hawkes.inference import HawkesEM
  from tick.hawkes.model.tests.model_hawkes_test_utils import hawkes_intensities, hawkes_log_likelihood
  from tick.hawkes import SimuHawkes, HawkesKernelTimeFunc, HawkesKernelExp, SimuHawkesExpKernels
  from tick.base import TimeFunction
label_desc: Use image node_id 2 for calling a global function with example usage: compute_approx_support_of_exp_kernel(a, b, eps) and returns: np