$$\frac{y'=\frac{1}{x}}{ }$$

$$y'=\frac{1}{x\ln2}$$

$$y'=\frac{1}{2\ln x}$$

$$y'=\frac{\ln2}{x}$$

$$y'=\left(\frac{2}{3}\right)^x$$

$$y'=\left(\frac{1}{2^{ }}\right)^x$$

$$y'=\log_2x$$

$$y'=2^x$$

$$\ln\left(\frac{a}{b}\right)=\ln b-\ln a$$

$$\frac{a^{\alpha}}{b^{\beta}}=\left(\frac{a}{b}\right)^{\alpha-\beta}$$

$$\ln\left(ab\right)=\ln a.\ln b$$

$$\ln\left(ab\right)=\ln a+\ln b$$

$$a^{\alpha}.b^{\beta\ }=\left(ab\right)\alpha$$

$$\frac{a^{\alpha}}{b^{\beta}}=\left(\frac{a}{b}\right)^{\alpha-\beta}$$

$$\frac{a^{\alpha}}{b^{\beta}}=a^{\alpha-\beta}$$

$$a^{\alpha}.a^{\beta}=a^{\alpha+\beta}$$

18 m/s

24m/s

108m/s

64m/s

$$\left(0;+\infty\right)$$

$$\left(-\infty;+\propto\right)$$

$$\left(0;+\propto\left|\right|\right)$$

$$\left(\lfloor3;+\propto\right)$$

$$-\frac{1}{x}$$

$$\frac{1}{x}$$

$$\frac{-1}{x^2}$$

$$\frac{1}{x^2}$$

$$y=-x^3+3x$$

$$y=x^4+3x^2$$

$$y=x^3-3x$$

$$y=-x^4+x^2$$

$$x^3+3x+1$$

$$\frac{x-1}{x+1}$$

$$-x^3-3x+1$$

$$x^4+2x^2$$

y' $$=2^x$$

$$y'=x.2^{x-1}$$

$$y'=2^x.\ln2$$

$$y'=\frac{2^x}{\ln2}$$

$$r^2=h^2+l^2$$

$$l^2=h^2+r^2$$

$$h^2=l^2+r^2$$

$$l^2=h^2-r^2$$

$$2\pi r^2l$$

$$\pi r^2l$$

$$\pi rl$$

$$2\pi rl$$

3

4

2

1

$$2\pi^{ }rl$$

$$2\pi rh$$

$$\pi rl$$

$$\pi rh$$

khối lập phương

khối chóp tam giác đều

khối chóp tứ giác đều

khối lăng trụ tam giác đều

$$\frac{a^2\sqrt[]{3}}{2}$$

$$2a^2.\sqrt[]{3}$$

$$\frac{3a^2.\sqrt[]{3}}{4}$$

$$\sqrt[]{3}a^2$$

$$\frac{4}{3}\pi\ R^3$$

$$\frac{3}{4}\pi R^3$$

$$\frac{4}{3}\pi R^2$$

$$4\pi^{ }R^3$$