$y = e ^{ ax } \sin bx ; \frac{d^2 y}{d x^2}-2 a \frac{d y}{d x}+\left(a^2+b^2\right) y=0$
$y = e ^{ ax } \sin bx ; \frac{d^2 y}{d x^2}-2 a \frac{d y}{d x}+\left(a^2+b^2\right) y=0$
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to the X-axis
$f(x)=x^2-3 x-1, x \in\left[\frac{-11}{7}, \frac{13}{7}\right]$
$\bar{r}=(\hat{i}+\hat{j}-\hat{k})+\lambda(2 \hat{i}-\hat{j}+\hat{k})$ and $\bar{r}=(2 \hat{i}+2 \hat{j}-3 \hat{k})+\mu(\hat{i}+\hat{j}-2 \hat{k})$
$\left[\begin{array}{lll}\bar{a} \bar{b} \bar{d}\end{array}\right]+\left[\begin{array}{lll}\bar{b} & \bar{c} & \bar{d}\end{array}\right]+\left[\begin{array}{lll}\bar{c} & \bar{a} & \bar{d}\end{array}\right]=\left[\begin{array}{ll}\bar{a} \bar{b} & \bar{c}\end{array}\right]$