code: def _scalar_func_2(self, s):
      p = jnp.exp(-4 * s) + s**2
      dp = -4 * jnp.exp(-4 * s) + 2 * s
      return p, dp
  
imports: from absl.testing import absltest
  import scipy.optimize
  import jax
  from jax import grad
  from jax import config
  import jax.numpy
  import jax._src.test_util
  from jax._src.scipy.optimize.line_search import line_search
label_desc: Use image node_id 4 for calling the TestLineSearch obj's underlying member method code with example usage: obj._scalar_func_2(s) and returns: p,  dp