00:02
Hi, here in this question we are given that x equals to minus 5 by 2 times p plus 14.
00:09
Now here we need to find the elasticity.
00:12
We know that formula for the elasticity is dx upon dp multiplied with p upon x.
00:21
Now here we know that the value of this elasticity modulus is greater than one than it is elastic.
00:32
Also, if the value of this elasticity is less than one, then it is inelastic.
00:39
And if the value is equal to one, then it is unitary.
00:45
This is also called ed elasticity with respect to demand function.
00:49
Now here for the first one we are given that x equals to minus 5 by 2 times p plus 14 and p equals to 5.
00:58
So here the value of d x upon d p is equal to minus 5 by 2 multiplied with 1 plus 0 which implies d x upon d p equals to minus 5 by 2.
01:11
So here substituting the value of p equals to 5 we have x equals to minus 5 by 2 multiplied with 5 plus 4.
01:19
Which implies here x equals to 3 by 2.
01:25
So here using all this value in the formula of the elasticity, we have elasticity for p equals to 5 as here we have minus 5 by 2 multiplied with p which is 5 divided by 3 by 2...