Datrys xsqrt{40}+3cos(4)=70

$$x \sqrt { 40 } + 3 \cos ( 4 ) = 70$$

Datrys ar gyfer x

$$x = \frac{335036539246102637 \sqrt{10}}{100000000000000000} = 10\frac{59478563398076930}{1 \times 10^{17}} \approx 10.594785634$$

Camau ar gyfer Datrys Hafaliad Llinol

Evaluate trigonometric functions in the problem

$$x \sqrt{40} + 3 \cdot 0.9975640502598242 = 70$$

Ffactora 40=2^{2}\times 10. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 10} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{10}. Cymryd isradd 2^{2}.

$$x\times 2\sqrt{10}+3\times 0.9975640502598242=70$$

Lluosi 3 a 0.9975640502598242 i gael 2.9926921507794726.

$$x\times 2\sqrt{10}+2.9926921507794726=70$$

Tynnu 2.9926921507794726 o'r ddwy ochr.

$$x\times 2\sqrt{10}=70-2.9926921507794726$$

Tynnu 2.9926921507794726 o 70 i gael 67.0073078492205274.

$$x\times 2\sqrt{10}=67.0073078492205274$$

Mae'r hafaliad yn y ffurf safonol.

$$2\sqrt{10}x=67.0073078492205274$$

Rhannu’r ddwy ochr â 2\sqrt{10}.

$$\frac{2\sqrt{10}x}{2\sqrt{10}}=\frac{67.0073078492205274}{2\sqrt{10}}$$

Mae rhannu â 2\sqrt{10} yn dad-wneud lluosi â 2\sqrt{10}.

$$x=\frac{67.0073078492205274}{2\sqrt{10}}$$

Rhannwch 67.0073078492205274 â 2\sqrt{10}.

$$x=\frac{335036539246102637\sqrt{10}}{100000000000000000}$$