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## Sachin Rana is teaching live on Unacademy Plus

Sachin Rana

IVth Year UG, IIT Bombay | YouTuber (150k subs) | No. 1 educator for Organic Chemistry.

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Aditya dhage

a month ago

sir if we get foot of perpendicular we can use the mid point formula also na

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Vishwajeet Rupnar

a month ago

in 7:55 how did you get slope of m1=-1/2

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Abantika Karmakar

a year ago

Sir, is the image : (y+2)^2 = -(x+3). Using the fact that the line containing the image is perpendicular to the mirror and will have slope 1 we can consider some point on the image and putting that back in the equation of the parabola given to get the image.

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Sachin Rana

a year ago

Yes, correct. Very good.

Aditya Singh

a year ago

let the equation of parabola is x=ay^2+by+C assume some point on given parabola find its image and pit it in the equation the find the value of a b c

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Sachin Rana

a year ago

I believe this won't be the correcr method. 3 variables.

Aditya Singh

a year ago

but my answer is right sir

Shreyas Raibole

7 months ago

assume x to be some variable and rewrite y in terms of it

Jessica Gulati

a year ago

(y+2)^2=-(x+3)
Assume the points on parabola, then find the image
After find image remove the parameter that we have assumed and the equation obtained will be our required image

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Sachin Rana

a year ago

Yes, correct. Very good.

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