**Benjamin Disraeli**

# Part - 11 Lecture - 11 Chapter 6 Application of Derivatives

**Topics discussed in this lecture:**

In this lecture I am discussing word problems in chapter 6 Applications of derivatives based on Local Maxima and Local Minima.

NCERT EXERCISE 6.5 |

**Question discussed in this lecture**

**Question 25. **Show that the semi-vertical angle of the cone of the maximum volume and of given slant height is \tan^{-1} \sqrt{2}.

**Question 26.** Show that semi-vertical angle of right circular cone of given surface area and maximum volume is \sin^{-1} \left( \frac{1}{3} \right) .

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