A a) \( D = \left( { - \infty ;-\dfrac{1}{3}} \right]\)
b) \(D = \mathbb{R}\)
c) \(D = \left( { - \infty ;0} \right)\)
B a) \( D = \left( { - \infty ;\dfrac{1}{3}} \right]\)
b) \(D = \mathbb{R}\)
c) \(D = \left( { - \infty ;0} \right)\)
C a) \( D = \left[ { -\dfrac{1}{3}}; +\infty \right)\)
b) \(D = \mathbb{R}\)
c) \(D = \left( { - \infty ;0} \right)\)
D a) \( D = \left[ { \dfrac{1}{3}}; +\infty \right)\)
b) \(D = \mathbb{R}\)
c) \(D = \left( { - \infty ;0} \right)\)
A \(x = 0;\, x = 5;\, x = 4\)
B \(x = 0;\, x = 4\)
C \(x = 0;\, x = 5\)
D \(x = 0;\, x = 5;\, x = 1;\, x = 4\)
A \(\begin{array}{l}a)\,\,\,\overrightarrow {AI} = \dfrac{3}{5}\overrightarrow {AB} + \dfrac{2}{5}\overrightarrow {AC} \\\,\,\,\,\,\,\,\,\overrightarrow {AJ} = \dfrac{5}{3}\overrightarrow {AB} - \dfrac{2}{3}\overrightarrow {AC} \\b)\,\,\overrightarrow {AG} = \dfrac{{35}}{{48}}\overrightarrow {AI} - \dfrac{1}{{16}}\overrightarrow {AJ} \end{array}\)
B \(\begin{array}{l}a)\,\,\,\overrightarrow {AI} = \dfrac{3}{5}\overrightarrow {AB} + \dfrac{3}{5}\overrightarrow {AC} \\\,\,\,\,\,\,\,\,\overrightarrow {AJ} = \dfrac{5}{3}\overrightarrow {AB} - \dfrac{2}{3}\overrightarrow {AC} \\b)\,\,\overrightarrow {AG} = \dfrac{{35}}{{48}}\overrightarrow {AI} - \dfrac{1}{{16}}\overrightarrow {AJ} \end{array}\)
C \(\begin{array}{l}a)\,\,\,\overrightarrow {AI} = \dfrac{3}{5}\overrightarrow {AB} + \dfrac{2}{5}\overrightarrow {AC} \\\,\,\,\,\,\,\,\,\overrightarrow {AJ} = \dfrac{5}{3}\overrightarrow {AB} + \dfrac{2}{3}\overrightarrow {AC} \\b)\,\,\overrightarrow {AG} = \dfrac{{35}}{{48}}\overrightarrow {AI} - \dfrac{1}{{16}}\overrightarrow {AJ} \end{array}\)
D \(\begin{array}{l}a)\,\,\,\overrightarrow {AI} = \dfrac{3}{5}\overrightarrow {AB} + \dfrac{2}{5}\overrightarrow {AC} \\\,\,\,\,\,\,\,\,\overrightarrow {AJ} = \dfrac{5}{3}\overrightarrow {AB} - \dfrac{2}{3}\overrightarrow {AC} \\b)\,\,\overrightarrow {AG} = \dfrac{{35}}{{48}}\overrightarrow {AI} + \dfrac{1}{{16}}\overrightarrow {AJ} \end{array}\)
A \(\begin{array}{l}a)\,\,{S_{ABC}} = 2\sqrt{2}\\b)\,\,\,M \equiv \,O\end{array}\)
B \(\begin{array}{l}a)\,\,{S_{ABC}} = 2\\b)\,\,\,M \equiv \,O\end{array}\)
C \(\begin{array}{l}a)\,\,{S_{ABC}} = 2\\b)\,\,\,M \equiv \,A\end{array}\)
D \(\begin{array}{l}a)\,\,{S_{ABC}} = 2\sqrt{2}\\b)\,\,\,M \equiv \,A\end{array}\)
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