limit as x approaches+7 of 2cos(x)

解答

x \to + 7 lim (2 cos (x))

2 cos (7)

十进制

1.50780 \dots

求解步骤

x \to 7 lim (2 cos (x))

代入值

x = 7

= 2 cos (7)

\frac{d}{d x} (2 x^{2} + 4 x + 7)

\frac{\partial}{\partial x} (5 x^{2} + 3 y^{2})

d er i v a t i v e f (x) = \frac{3 t}{t - 6}

\int \frac{y}{( 1 + y ^{2} ) ^{\frac{1}{2}}} d y

\int (x sin (x^{2})) d x