B

9000070703

Část: 
B
Určete první derivaci funkce \(f\colon y = \sqrt{\sin x -\cos x}\).
\(f^{\prime}(x) = \frac{\sin x+\cos x} {2\sqrt{\sin x-\cos x}};\ x\in \left ( \frac{\pi }{4} + 2k\pi ; \frac{5\pi } {4} + 2k\pi \right ),\ k\in \mathbb{Z}\)
\(f^{\prime}(x) = \frac{\sin x+\cos x} {2\sqrt{\sin x-\cos x}};\ x\in \left \langle \frac{\pi }{4} + 2k\pi ; \frac{5\pi } {4} + 2k\pi \right \rangle ,\ k\in \mathbb{Z}\)
\(f^{\prime}(x) = \frac{\sin x-\cos x} {2\sqrt{\sin x-\cos x}};\ x\in \left \langle \frac{\pi }{4} + 2k\pi ; \frac{5\pi } {4} + 2k\pi \right \rangle ,\ k\in \mathbb{Z}\)
\(f^{\prime}(x) = \frac{\sin x-\cos x} {2\sqrt{\sin x-\cos x}};\ x\in \left ( \frac{\pi }{4} + 2k\pi ; \frac{5\pi } {4} + 2k\pi \right ),\ k\in \mathbb{Z}\)

9000070704

Část: 
B
Určete první derivaci funkce \(f\colon y = \frac{1} {\cos x+3x^{2}} \).
\(f^{\prime}(x) = \frac{\sin x-6x} {(3x^{2}+\cos x)^{2}} ;\ x\in \mathbb{R}\)
\(f^{\prime}(x) = \frac{6x-\sin x} {(3x^{2}+\cos x)^{2}} ;\ x\in \mathbb{R}\)
\(f^{\prime}(x) = \frac{\sin x-6x} {3x^{2}+\cos x};\ x\in \mathbb{R}\)
\(f^{\prime}(x) = \frac{6x-\sin x} {3x^{2}+\cos x};\ x\in \mathbb{R}\)

9000070706

Část: 
B
Určete první derivaci funkce \(f\colon y = \sqrt{x^{2 } + 3x}\).
\(f^{\prime}(x) = \frac{2x+3} {2\sqrt{x^{2 } +3x}};\ x\in \left (-\infty ;-3\right )\cup \left (0;\infty \right )\)
\(f^{\prime}(x) = \frac{2x+3} {2\sqrt{x^{2 } +3x}};\ x\in \left (-\infty ;-3\right \rangle \cup \left \langle 0;\infty \right )\)
\(f^{\prime}(x) = \frac{2x+3} {\sqrt{x^{2 } +3x}};\ x\in \left (-\infty ;-3\right )\cup \left (0;\infty \right )\)
\(f^{\prime}(x) = \frac{\sqrt{x^{2 } +3x}} {2x+3} ;\ x\in \left (-\infty ;-3\right \rangle \cup \left \langle 0;\infty \right )\)

9000065904

Část: 
B
Vypočtěte \(\int \frac{x^{3}+2x} {x^{2}} \, \text{d}x\) na intervalu \((0;+\infty)\).
\(\frac{1} {2}x^{2} + 2\ln |x| + c,\ c\in\mathbb{R}\)
\(x +\ln |x| + c,\ c\in\mathbb{R}\)
\(\frac{1} {4}x^{4} + 4x^{2} +\ln |x^{2}| + c,\ c\in\mathbb{R}\)
\(2x^{2} + 2 +\ln |x^{2}| + c,\ c\in\mathbb{R}\)
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