![1)\; \; y=\sqrt{(2x+3)(x-1)}\\\\OOF:\; \; (2x+3)(x-1)\geq 0\\\\x_1=-1,5\; \; ,\; x_2=1\\\\znaki\; y(x):\; \; \; +++[-1,5\, ]---[\, 1\, ]+++\\\\x\in (-\infty ,-1,5\, ]\cup [\, 1,+\infty )](https://tex.z-dn.net/?f=1%29%5C%3B%20%5C%3B%20y%3D%5Csqrt%7B%282x%2B3%29%28x-1%29%7D%5C%5C%5C%5COOF%3A%5C%3B%20%5C%3B%20%282x%2B3%29%28x-1%29%5Cgeq%200%5C%5C%5C%5Cx_1%3D-1%2C5%5C%3B%20%5C%3B%20%2C%5C%3B%20x_2%3D1%5C%5C%5C%5Cznaki%5C%3B%20y%28x%29%3A%5C%3B%20%5C%3B%20%5C%3B%20%2B%2B%2B%5B-1%2C5%5C%2C%20%5D---%5B%5C%2C%201%5C%2C%20%5D%2B%2B%2B%5C%5C%5C%5Cx%5Cin%20%28-%5Cinfty%20%2C-1%2C5%5C%2C%20%5D%5Ccup%20%5B%5C%2C%201%2C%2B%5Cinfty%20%29 "1)\; \; y=\sqrt{(2x+3)(x-1)}\\\\OOF:\; \; (2x+3)(x-1)\geq 0\\\\x_1=-1,5\; \; ,\; x_2=1\\\\znaki\; y(x):\; \; \; +++[-1,5\, ]---[\, 1\, ]+++\\\\x\in (-\infty ,-1,5\, ]\cup [\, 1,+\infty )")
f(\sqrt7)\; ." alt="2)\; \; f(x)=\frac{13-2x}{3}\; \; ,\; \; \; ODZ:\; x\in R\\\\f'(x)=-\frac{2}{3}\ne 0\; \; ,\; \; f'(x)<0\; \; \Rightarrow \; \; f(x)\; ybuvaet\; na\; ODZ\\\\Tak\; kak\; \; 5<7\; ,\; to\; \; \sqrt5<\sqrt7\; \; i\; \; f(x)\; ybuvaet\; \; \Rightarrow \; \; f(\sqrt5)>f(\sqrt7)\; ." align="absmiddle" class="latex-formula">
Функция нечётная.