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ECAT Mathematics QUESTION #781
Question 1
\(\sinh^2 x + \cosh^2 x = ?\)
  • \(\cosh 2x\)✔️
  • \(\cosh x\)
  • \(\sinh 2x\)
  • None
Correct Answer Explanation
Using hyperbolic identities: \(\cosh^2 x + \sinh^2 x = \cosh 2x\).