Разложение на множители
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/ _______________________ \ / _______________________ \ / _______________________ \
| / _________ / ___\ | | / _________ / ___\ | | / _________ |
| 35 / 1820987 \/ 2621373 | 1 I*\/ 3 | 9433 | | 35 / 1820987 \/ 2621373 | 1 I*\/ 3 | 9433 | | 35 / 1820987 \/ 2621373 9433 |
1*|a + - -- - 3 / ------- + ----------- *|- - - -------| - -------------------------------------------------|*|a + - -- - 3 / ------- + ----------- *|- - + -------| - -------------------------------------------------|*|a + - -- - 3 / ------- + ----------- - ---------------------------------|
| 36 \/ 46656 48 \ 2 2 / _______________________| | 36 \/ 46656 48 \ 2 2 / _______________________| | 36 \/ 46656 48 _______________________|
| / ___\ / _________ | | / ___\ / _________ | | / _________ |
| | 1 I*\/ 3 | / 1820987 \/ 2621373 | | | 1 I*\/ 3 | / 1820987 \/ 2621373 | | / 1820987 \/ 2621373 |
| 1296*|- - - -------|*3 / ------- + ----------- | | 1296*|- - + -------|*3 / ------- + ----------- | | 1296*3 / ------- + ----------- |
\ \ 2 2 / \/ 46656 48 / \ \ 2 2 / \/ 46656 48 / \ \/ 46656 48 /
$$1 \left(a - \left(\frac{35}{36} + \left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{2621373}}{48} + \frac{1820987}{46656}} + \frac{9433}{1296 \left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{2621373}}{48} + \frac{1820987}{46656}}}\right)\right) \left(a - \left(\frac{35}{36} + \frac{9433}{1296 \left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{2621373}}{48} + \frac{1820987}{46656}}} + \left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{2621373}}{48} + \frac{1820987}{46656}}\right)\right) \left(a - \left(\frac{35}{36} + \frac{9433}{1296 \sqrt[3]{\frac{\sqrt{2621373}}{48} + \frac{1820987}{46656}}} + \sqrt[3]{\frac{\sqrt{2621373}}{48} + \frac{1820987}{46656}}\right)\right)$$
((1*(a - (35/36 - (1820987/46656 + sqrt(2621373)/48)^(1/3)*(-1/2 - i*sqrt(3)/2) - 9433/(1296*(-1/2 - i*sqrt(3)/2)*(1820987/46656 + sqrt(2621373)/48)^(1/3)))))*(a - (35/36 - (1820987/46656 + sqrt(2621373)/48)^(1/3)*(-1/2 + i*sqrt(3)/2) - 9433/(1296*(-1/2 + i*sqrt(3)/2)*(1820987/46656 + sqrt(2621373)/48)^(1/3)))))*(a - (35/36 - (1820987/46656 + sqrt(2621373)/48)^(1/3) - 9433/(1296*(1820987/46656 + sqrt(2621373)/48)^(1/3))))
Подстановка условия
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(2*a - 1*3)^2*a/9 - 1*27 + (a - 1*6)^2/27 - 9*a при a = 1/2
2 2
(2*a - 3) *a (a - 6)
------------ - 27 + -------- - 9*a
9 27
$$\frac{a \left(2 a - 3\right)^{2}}{9} + \frac{\left(a - 6\right)^{2}}{27} - 9 a - 27$$
2 3
77 76*a 35*a 4*a
- -- - ---- - ----- + ----
3 9 27 9
$$\frac{4 a^{3}}{9} - \frac{35 a^{2}}{27} - \frac{76 a}{9} - \frac{77}{3}$$
$$a = \frac{1}{2}$$
2 3
77 76*(1/2) 35*(1/2) 4*(1/2)
- -- - -------- - --------- + --------
3 9 27 9
$$\frac{4 (1/2)^{3}}{9} - \frac{35 (1/2)^{2}}{27} - \frac{76 (1/2)}{9} - \frac{77}{3}$$
1 1
35*-- 4*--
2 3
77 2 2
- -- - 76/9*1/2 - ----- + ----
3 27 9
$$- \frac{77}{3} - \frac{38}{9} - \frac{35}{4 \cdot 27} + \frac{4}{8 \cdot 9}$$
$$- \frac{3257}{108}$$
Рациональный знаменатель
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2 2
-6561 - 2187*a + 9*(-6 + a) + 27*a*(-3 + 2*a)
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243
$$\frac{27 a \left(2 a - 3\right)^{2} + 9 \left(a - 6\right)^{2} - 2187 a - 6561}{243}$$
(-6561 - 2187*a + 9*(-6 + a)^2 + 27*a*(-3 + 2*a)^2)/243
Объединение рациональных выражений
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2 2
-729 + (-6 + a) - 243*a + 3*a*(-3 + 2*a)
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27
$$\frac{3 a \left(2 a - 3\right)^{2} + \left(a - 6\right)^{2} - 243 a - 729}{27}$$
(-729 + (-6 + a)^2 - 243*a + 3*a*(-3 + 2*a)^2)/27