Show that the equation 2 cos 2 x + cos x 6 = 0 has no
Question:
Show that the equation 2 cos2 x + cos x – 6 = 0 has no solutions.
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To show that the equation 2 cosx cosx 6 0 has no solutions we can analyze the discriminan...View the full answer
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Related Book For 
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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