2টি প্রশ্ন
y=ln(x+m2+x2)y=\ln \left(x+\sqrt{m^{2}+x^{2}}\right)y=ln(x+m2+x2) এবং h(x)=xlnxh(x)=\frac{x}{\ln x}h(x)=lnxx
px+qy+rz=1\mathrm{px}+\mathrm{qy}+\mathrm{rz}=1px+qy+rz=1 p2x+q2y+r2z=ap^{2} x+q^{2} y+r^{2} z=ap2x+q2y+r2z=a (p3−1)x+(q3−1)y+(r3−1)z=a2\left(\mathrm{p}^{3}-1\right) \mathrm{x}+\left(\mathrm{q}^{3}-1\right) \mathrm{y}+\left(\mathrm{r}^{3}-1\right) \mathrm{z}=\mathrm{a}^{2}(p3−1)x+(q3−1)y+(r3−1)z=a2