7.7 Employ the following methods to find the maximum of f (x) = 4x − 1.8x2 + 1.2x3 − 0.3x4 (a) Golden-section search (xl = – 2, xu = 4, εs = 1%). (b) Parabolic interpolation (x1 = 1.75, x2 = 2, x3 = 2.5, iterations = 5).

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step-by-step explanation:

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225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

the terms of a geometric sequence can be found by beginning with the first term and multiplying by the common ratio repeatedly. a recursive formula for a geometric sequence with common ratio r is given by an=ran−1 a n = r a n − 1 for n≥2 n ≥ 2 .

step-by-step explanation: