Solve example on various calculators

12092023, 01:19 PM
Post: #2




RE: Solve example on various calculators
Cas> zeros((x+1) * sqrt(x*x2*x1))
[1, √2+1, √2+1] By hand: f = (x+1) * sqrt(x*x2*x1) ln(f) = ln(x+1) + 1/2 * ln(x*x2*x1) f'/f = 1/(x+1) + (x1)/(x*x2*x1) = 1/(x+1) + 1/((x1)  2/(x1)) f'/f is rational polynomial, without sqrt. f = 0 → f'/f = ±∞ → x = 1, 1±√2 

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Messages In This Thread 
Solve example on various calculators  lrdheat  12092023, 02:38 AM
RE: Solve example on various calculators  Albert Chan  12092023 01:19 PM
RE: Solve example on various calculators  lrdheat  12092023, 03:04 PM
RE: Solve example on various calculators  C.Ret  12092023, 06:19 PM
RE: Solve example on various calculators  lrdheat  12092023, 07:24 PM
RE: Solve example on various calculators  Marco Polo  12092023, 10:08 PM
RE: Solve example on various calculators  C.Ret  12102023, 03:19 AM
RE: Solve example on various calculators  Gene222  12122023, 04:21 PM
RE: Solve example on various calculators  lrdheat  12102023, 04:32 AM
RE: Solve example on various calculators  carey  12102023, 09:27 AM
RE: Solve example on various calculators  Albert Chan  12102023, 04:05 PM
RE: Solve example on various calculators  lrdheat  12102023, 02:28 PM

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