1103023902
Level:
A
The figure shows the derivative of one of the functions displayed below. Choose the function.
Derivatives of Functions
1103023901
Level:
A
The graph of \( f' \) is given in figure. Function \( f' \) is the derivative of a function \( f \). Choose which of the following graphs is the graph of \( f \).
9000070704
Level:
B
Differentiate the following function.
\[
f(x) = \frac{1}
{\cos x + 3x^{2}}
\]
\(f^{\prime}(x) = \frac{\sin x-6x}
{(3x^{2}+\cos x)^{2}} ;\ x\in \mathbb{R}\)
\(f^{\prime}(x) = \frac{6x-\sin x}
{(3x^{2}+\cos x)^{2}} ;\ x\in \mathbb{R}\)
\(f^{\prime}(x) = \frac{\sin x-6x}
{3x^{2}+\cos x};\ x\in \mathbb{R}\)
\(f^{\prime}(x) = \frac{6x-\sin x}
{3x^{2}+\cos x};\ x\in \mathbb{R}\)
9000070706
Level:
B
Differentiate the following function.
\[
f(x) = \sqrt{x^{2 } + 3x}
\]
\(f^{\prime}(x) = \frac{2x+3}
{2\sqrt{x^{2 } +3x}};\ x\in \left (-\infty ;-3\right )\cup \left (0;\infty \right )\)
\(f^{\prime}(x) = \frac{2x+3}
{2\sqrt{x^{2 } +3x}};\ x\in \left (-\infty ;-3\right ] \cup \left [ 0;\infty \right )\)
\(f^{\prime}(x) = \frac{2x+3}
{\sqrt{x^{2 } +3x}};\ x\in \left (-\infty ;-3\right )\cup \left (0;\infty \right )\)
\(f^{\prime}(x) = \frac{\sqrt{x^{2 } +3x}}
{2x+3} ;\ x\in \left (-\infty ;-3\right ] \cup \left [ 0;\infty \right )\)
9000070707
Level:
B
Differentiate the following function.
\[
f(x) = \root{5}\of{x^{2} - 7x}
\]Remark: The function \(f\colon y = \root{5}\of{x}\)
is defined for \(x\in \left < 0;\infty \right )\).
\(f^{\prime}(x) = \frac{2x-7}
{5(x^{2}-7x)^{\frac{4}
{5} }} ;\ x\in \left (-\infty ;0\right )\cup \left (7;\infty \right )\)
\(f^{\prime}(x) = \frac{2x-7}
{5(x^{2}-7x)^{\frac{4}
{5} }} ;\ x\in \left (-\infty ;0\right ] \cup \left [ 7;\infty \right )\)
\(f^{\prime}(x) = (2x - 7)\root{4}\of{x^{2} - 7x};\ x\in \left (-\infty ;0\right )\cup \left (7;\infty \right )\)
\(f^{\prime}(x) = (2x - 7)\root{4}\of{x^{2} - 7x};\ x\in \left (-\infty ;0\right ] \cup \left [ 7;\infty \right )\)
9000070801
Level:
B
Differentiate the following function.
\[
f(x) = 3\sin x\cos x
\]
\(f'(x) = 3\cos (2x);\ x\in \mathbb{R}\)
\(f'(x) = 3;\ x\in \mathbb{R}\)
\(f'(x) = -3\cos x\sin x;\ x\in \mathbb{R}\)
\(f'(x) = 3(\cos x)^{2};\ x\in \mathbb{R}\)
9000070803
Level:
A
Differentiate the following function.
\[
f(x) = 3x^{3} + 2x +\mathrm{e} ^{x}
\]
\(f'(x) = 9x^{2} + 2 +\mathrm{e} ^{x};\ x\in \mathbb{R}\)
\(f'(x) = 6x^{2} + 2x;\ x\in \mathbb{R}\)
\(f'(x) = 6x^{2} + 2x +\mathrm{e} ^{x};\ x\in \mathbb{R}\)
\(f'(x) = 9x^{2} + 2;\ x\in \mathbb{R}\)
9000070804
Level:
A
Differentiate the following function.
\[
f(x) = 2x^{9} - x^{2} + 7
\]
\(f'(x) = 18x^{8} - 2x;\ x\in \mathbb{R}\)
\(f'(x) = 9x^{8} - 2x + 7;\ x\in \mathbb{R}\)
\(f'(x) = 18x^{8} - 2x + 7;\ x\in \mathbb{R}\)
\(f'(x) = 18x^{8} + 2x;\ x\in \mathbb{R}\)
9000070805
Level:
A
Differentiate the following function.
\[
f(x) = -3x^{3} - x^{2} + 9x
\]
\(f'(x) = -9x^{2} - 2x + 9;\ x\in \mathbb{R}\)
\(f'(x) = 9x^{2} - 2x + 9;\ x\in \mathbb{R}\)
\(f'(x) = 27x^{2} - 2x;\ x\in \mathbb{R}\)
\(f'(x) = -9x^{2} - 2x;\ x\in \mathbb{R}\)
9000070807
Level:
B
Differentiate the following function.
\[
f(x) = \frac{x^{4} + 3}
{x^{2}} + x^{3}
\]
\(f'(x) = 3x^{2} + 2x - \frac{6}
{x^{3}} ;\ x\in \mathbb{R}\setminus \{0\}\)
\(f'(x) = 6x^{2} - 2x - \frac{6}
{x^{3}} ;\ x\in \mathbb{R}\setminus \{0\}\)
\(f'(x) = 3x^{2} + 2x + \frac{6}
{x^{3}} ;\ x\in \mathbb{R}\setminus \{0\}\)
\(f'(x) = 6x^{2} - 2x + \frac{6}
{x^{3}} ;\ x\in \mathbb{R}\setminus \{0\}\)