Falling Behind in Studies? Join Our Performance Improvement Batch. Enroll For Free
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
If pth,qth,rth terms on an ap are in GP find the common ratio.
Dear student Let first term of the AP = a and common difference = d pth of an AP= a+(p−1)d qth of an AP= a+(q−1)d rth of an AP= a+(r−1)d are in G.P Let first term of the GP be x and common ratio be y then a+(p−1)d=x........(i) a+(q−1)d =xy........(ii) a+(r−1)d=xy² ........(iii) Subtract (i) from (ii) and get (q−1)d −(p−1)d=xy−x →(q−p)d=xy−x......(iv) Subtract (ii) from (iii) and get (p−1)d −(r−1)d=xy²−xy =y(xy−x) →(q−r)d=y(xy−x) .....(v) divide (v) by (iv) and get (q−r)/(p−q)= y
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -