find the length of the laus rectum of the parabola-


4y^2+2x-20y+17=0


plz help..thanx in advance!!

2 years ago

Share

Answers : (2)

                    

the above equation can be written as 


                                                   ( 2y-5)^2=2(x+4)


                                                   therefore the length of the latus rectum is 2

2 years ago
                    

A small mistake in the above post.


 


(2y-5)2 = -2x-17+25 = -2x+8 = -2(x-4)


 


or, (y- 5/2)2 = -1/2 * (x-4)


 


So Latus Rectum is 1/2 .

2 years ago

Post Your Answer

More Questions On Analytical Geometry

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
find the angle between the two st lines 3x=4y+7 and 5y=12x+6 and also the equations to the two lines which pass through the point (4,5) and make equal angles with the two given lines
 
 
Ans: Hello student, Please find answer to your question below …...........(1) ............(2) Angle b/w two lines: Let the slope of the lines be ‘m’ which make equal angle...
  img
Jitender Singh yesterday
Please explain how to identify the acute and obtuse angle bisectors using the angle bisectory formula.
 
 
if two lines are: L1 : a 1 x + b 1 y + c 1 = 0 L2 : a 2 x + b 2 y + c 2 = 0 then eqn of angle bisectors (a1x + b1y + c1) / {(a 1 ) 2 + (b 1 ) 2 } 1/2 = + - (a2x + b2y + c2) / {(a2)^2+...
  img
Ajay Verma 4 days ago
A coin is tossed twice and a die is rolled once. Find the probability that at most 1 head is tossed and a number less than 4 shows.
 
 
At most one head is tossed: this means that it did not yield heads on both tosses. There is a 1/4 chance that it is heads on both tosses, and a 3/4 chance remains for at most one head being...
  img
bharat bajaj 4 months ago
 
uh better go with cases,atmost 1 head says either head or no head,by probablity 1st coin total case when head(h) tail (t) are tt hh th ht so we need either tt or ht probabilty=3/4 now we...
 
yash kulshrestha 4 months ago
IN A TRIANGLE ABC , sides a:b:c = 4:5:6 , then ratio of circumradius to inradius is???
 
 
Given a:b:c = 4:5:6 so a=4k, b=5k, c=6k we know cosA= b^2 + c^2 - a^2 2bc on solving we get cosA=3/4 so (sinA)^2=7/16------(1) <(sinA)^2=1-(cosA)^2> circumradius, R=abc/4*area of...
 
Rohit Subramuniam one year ago
 
hi Rahul PFA this will definetly help
 
jitender lakhanpal one year ago
 
correct but it took a long while indeed...........................................
 
rahul agrwl 6 months ago
lim of sinx x when x tends to infinite.
 
 
Ans: Hello Student, Please find answer to your question below Function in the limit is not clear. If the function is Limit is not determinate. Because we have sin of some number which is...
  img
Jitender Singh yesterday
View all Questions »