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  1. ...a half-period of 60 deg, so there are minima at x = -30, +90, etc. Note that x = 0 is halfway between -30 and +30, so there is no phase shift if...

    1 Answers · Science & Mathematics · 26/05/2019

  2. ..., √5321 - 1 is irrational. An alternate approach is to note that 5321 = 17 × 313, both of which are prime. Thus, 5321 is not...

    2 Answers · Science & Mathematics · 20/05/2019

  3. The negation of that expression is: ∼∃x(D(x) → (C(x) ∧ F(x))) But that form has the negation of a quantifier ∼∃x(...) and you're asked to come up with an equivalent expression that doesn't have any such thing. That's where your negation-of-a...

    1 Answers · Science & Mathematics · 13/05/2019

  4. I thought a horizontal stretch of 1/2 was the same as a horizontal compression of 2 (its reciprocal)?

    1 Answers · Science & Mathematics · 21/05/2019

  5. ...not include ) so just read for x = 29 P(x<30) = 0.43897 Note: If you are just supposed use the table These two...

    1 Answers · Science & Mathematics · 26/02/2019

  6. How could you get less than 20 if you have a positive number added to 20 lol??? Note it is greater than _or equal to_ 20, not just greater.

    2 Answers · Science & Mathematics · 26/02/2019

  7. Note that 3n^2 + 101n ≤ c(2n^2 − 19n + 20) is equivalent to (2c - 3) n^2 - (19c...3. We see that c = 131/3 suffices, by examining the plot (note that the curve is above the horizontal axis for all n ≥ 10): https://www...

    2 Answers · Science & Mathematics · 17/02/2019

  8. .... This pairs off c and d: c + d = 90 Also note that the triangle "a", "b", "c" is an equilateral triangle...

    3 Answers · Science & Mathematics · 15/02/2019

  9. ...567. Hmm, as I detect a pattern, I may try ALGEBRA... Note that [10^(2n) - 1]/[10^n + 1] = 10^n - 1, that's "Algebra 2."...

    2 Answers · Science & Mathematics · 06/02/2019

  10. Following the hint: Note that z ≤ 0 iff π/2 ≤ φ ≤ π. So, ∫∫∫..., one can obtain this directly from the triple integral by noting that e^((x² + y² + z²)⁶) >...

    2 Answers · Science & Mathematics · 20/12/2018

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