MCQ
$\log \,\left( {\frac{{dy}}{{dx}}} \right) = ax + by$ નો ઉકેલ મેળવો.
- A$\frac{{{e^{by}}}}{b} = \frac{{{e^{ax}}}}{a} + c$
- ✓$\frac{{{e^{ - by}}}}{{ - b}} = \frac{{{e^{ax}}}}{a} + c$
- C$\frac{{{e^{ - by}}}}{a} = \frac{{{e^{ax}}}}{b} + c$
- Dએકપણ નહી.
$0$ અને $f(n)=\alpha^n+\beta^n$ અને $\begin{vmatrix} 3 & 1+f(1) & 1+f(2) \\ 1+f(1) & 1+f(2) & 1+f(3) \\ 1+f(2) & 1+f(3) & 1+f(4) \end{vmatrix}$ =$k(1-\alpha)^2(1-\beta)^2(\alpha-\beta)^2,$ તો $k=.......$