1.What is the right account of "Perez y Martina"?
举一反三
- 函数$y = \ln x$,则${\left( {\ln x} \right)^{\left( n \right)}} = {\left( { - 1} \right)^{n - 1}}{{\left( {n - 1} \right)!} \over {{x^n}}}$。( )
- 设$y = \sin (-x + 1)$,则${y^{\left( 5 \right)}} = $______ 。
- 已知\( y = \ln \left| x \right| \),则\( y' \)为( ). A: \( {1 \over {\left| x \right|}} \) B: \( {1 \over x} \) C: \( - {1 \over x} \) D: \( x \)
- 由\( y = {x^2} - 1,\;y = 0 \)围成的平面图形面积可表示为( )。 A: \( \int_{ - 1}^1 {\left( { - {x^2} + 1} \right)} dx \) B: \( \int_{ - 1}^1 {\left( { { x^2} - 1} \right)} dx \) C: \( \int_0^1 {\left( { - {x^2} + 1} \right)} dx \) D: \( \int_0^1 {\left( { { x^2} - 1} \right)} dx \)
- 函数\(y = {\left( { - 2x + 1} \right)^4}\)的导数为( ). A: \( - 8{\left( { - 2x + 1} \right)^3}\) B: \(8{\left( { - 2x + 1} \right)^3}\) C: \(4{\left( { - 2x + 1} \right)^3}\) D: \(- 4{\left( { - 2x + 1} \right)^3}\)