Edexcel FP3 — Question 1

Exam BoardEdexcel
ModuleFP3 (Further Pure Mathematics 3)
TopicHyperbolic functions
  1. Find the exact values of x for which
$$4 \tanh ^ { 2 } x - 2 \operatorname { sech } ^ { 2 } x = 3 ,$$ giving your answers in the form \(\pm \ln \mathrm { a }\), where a is real.
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