Part 2: Paper6 (Science) and Paper 5(social science)

Paper6 (Science) and Paper 5(social science)

Multiple Choice

គេមានសមីការឌីផេរ៉ង់ស្យែល (E'): $y\ '-3y=3x^{2\ }-2x\$ 

បើ P(x) ជាចម្លើយនៃសមីការ (E')ខាងលើ តើគេត្រូវតាង P(x)=? 

•  $P\left(x\right)=ax+b\ ,\ a,b\in R\ ,\ a\ne0$  

•  $P\left(x\right)=ax^2+bx+c\ ,\ a\ne0\ ,\ a,b,c\in R$  

•  $P\left(x\right)=k\left(ax^2+bx+c\right)\ ,\ a,b,c,k\in R$  

•  $P\left(x\right)=A\left(x\right)e^{\alpha x}\ ,\ A\in R$  

Multiple Choice

តើសមីការឌីផេរ៉ង់ស្យែលទម្រង់ $y\ '\ +ay=0$ មានចម្លើយ ដូចម្តេច? 

•  $y=Ae^{-a\ x}\ \ ,\ A\in R$  

•  $y=Ae^{ax}\ ,\ A\in R$  

•  $y=-Ae^{ax}\ ,\ A\in R$  

•  $y=-Ae^{-ax}\ ,\ A\in R$  

Multiple Choice

បើ $\overrightarrow{AB}=\left(x,\ y,\ z\right)\ ,\ \overrightarrow{AC}=\left(x\ ',\ y\ '\ \ ,\ z\ '\right)$  នោះ  $\overrightarrow{AB}\ \times\overrightarrow{AC}\ =\ ?$  

•  $\overrightarrow{AB}\times\overrightarrow{AC}=\left(yz\ '\ -y\ 'z\right)\overrightarrow{i\ \ }-\left(xz\ '\ -x\ '\ z\right)\overrightarrow{j\ \ }+\left(xy\ '\ -x\ '\ y\ \right)\overrightarrow{k\ \ }$  

•  $\overrightarrow{AB}\times\overrightarrow{AC}=xx\ '\ +y\ y\ '\ +z\ z\ '$  

•  $\overrightarrow{AB}\times\overrightarrow{AC}=\left(yz\ '\ -y\ 'z\right)\overrightarrow{i\ \ }+\left(xz\ '\ -x\ '\ z\right)\overrightarrow{j\ \ }+\left(xy\ '\ -x\ '\ y\ \right)\overrightarrow{k\ \ }$  

•  $\overrightarrow{AB}\times\overrightarrow{AC}=\left|\overrightarrow{AB}\right|\cdot\left|\overrightarrow{AC}\right|\cdot\cos\alpha$  

លំហាត់អនុគមន៍ផ្នែក វិទ្យាសាស្រ្តសង្គម