Prove that in a triangle medians are always greater than altitude

What is the duration for online course of each topic.  1.Sunday and early morning batch.                      2. Weekdays batch timings

The volume of a cube is increasing at the rate of 9 cubic cm per second.how fast is surface area increasing when the length of an edge is 10 em?

2√3 cot x = sec x

Simple form of 2nd quation

Find the image of the position vector i + 3j + 4k in plane r.(2i - j + k) + 3

Log 4*log27 

Prove that 3^1/2×3^1/4×3^1/6.....=3

Registration full detail 

Place of supply? Supplier carry goods from one state to another by bus or by their own vehicle? 

1. a manufacturer reckons that the value of a machine , which costs him rs 15625, will depreciate each year by 20percant . find the estimated value at the end of 5 years

√33

Can't we prove theorem 8.5 using theorem 8.1 that states ' diagonal of a paralleogram divides it into two congruent triangles" ? 
I meant to say : 
1.Draw the diagonal
2.Based on given data, prove that 2 triangles are congruent. 
3.Atlast say " as the diagonal divides the given figure into two congruent triangles it is a paralleogram."
Is my method correct??

(B+c)cosb+c/2=acosB-c/2

Lim x¹⁵ - 1 / x¹⁰ - 1
x->1 

Equations of application of integrals

How to change units in tally as it is showing as ' not applicable ' in 'units ' head?

Sir,Does there is another way to solve this question??

Sir,is there is another way to solve this que2 from 9.2