Вариант 2 ИДЗ 6.2

DHS - 6.2
Find y´ and y. "
No. 1.2. x² / 5 + y² / 7 = 1.
Find y´ and y. "
№ 2.2. {x = 2cos²t; y = 3sin²t
No. 3.2. For a given function y and argument x0, calculate y´´´ (x0); y = arct x; x0 = 1.
No. 4.2. Write the formula for the derivative of the nth order for the function y = 1 / x;
No. 5.2. Write the equation of the normal to the curve y = x² - 16x + 7; at the point with the x = 1 abscissa.
No. 6.2. The law of motion of a material point is S = 3t² / 4 - 3t + 7. At what point in time will its velocity be 2 m / s?