5.50. Prove that the equation cos² (x) – 4x + 7 = 0 has a real number solution in the interval [0, 4] . (You may assume that cos? (x) is continuous on [0, 4] .)

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5.50. Prove that the equation cos? (x) – 4x + = 0 has a real number solution in the interval [0, 4]. (You may assume that cos? (x) is continuous on
[0, 4] .)
Transcribed Image Text:5.50. Prove that the equation cos? (x) – 4x + = 0 has a real number solution in the interval [0, 4]. (You may assume that cos? (x) is continuous on [0, 4] .)
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