Answer

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

Updated On: 23-6-2021

Apne doubts clear karein ab Whatsapp par bhi. Try it now.

CLICK HERE

Loading DoubtNut Solution for you

Watch 1000+ concepts & tricky questions explained!

3.2 K+

1.7 K+

Text Solution

A.PG.PH.P none of these

Answer :

CSolution :

`a_(1),a_(2),….,a_(n)` are in H.P. <br> `rArrcdot1/a_(1),1/a_(2),…,1/a_(n)` are in A.P. <br> `rArr(a_(1)+a_(2)+a_(3)+..+a_(n))/a_(1),(a_(1)+a_(2)+a_(3)+..+a_(n))/a_(2),…,(a_(1)+a_(2)+a_(3)+..+a_(n))/a_(n)` are in A.P. <br> `=1+(a_(2)+a_(3)+..+a_(n))/a_(1),1+(a_(1)+a_(3)+..+a_(n))/a_(2),....,1+(a_(1)+a_(2)+...+a_(n-1))/a_(n)` are in A.P. <br> `rArr(a_(2)+a_(3)+...+a_(n))/a_(1),(a_(1)+a_(3)+..+a_(n))/a_(2),...,(a_(1)+a_(2)+...+a_(n-1))/a_(n)` are in A.P. <br> `rArra_(1)/(a_(2)+a_(3)+...+a_(n)),a_(2)/(a_(1)+a_(3)+...+a_(n)),...,a_(n)/(a_(1)+a_(2)+...a_(n-1))` are in H.P.**What is differential equation and order and degree of a differential equation**

**Linear and nonlinear differential equation**

**General form of 1st order and 1st degree differential equation; geometrical interpretation and the solution**

**Solve: `dy / dx = sin^3x cos^2x + x e^x`**

**Differential Equations of the type `dy / dx = f(y)`**

**Solve: `dy / dx = sin^2y`**

**Formation Of Differential Equations**

**Form the differential equation of the family of curves represented `c(y + c)^2 = x^3`, where c is a parameter.**

**Find the differential equation that represents the family of all parabolas having their axis of symmetry with the x-axis.**

**Solution; general solution and particular solution**