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The tangent at a point P on the curve x^4 y^5 = a^9 meet the x and y axes in A and B respectively Then AP:PB=?
 one year ago
 one year ago
Yahoo! Group Title
The tangent at a point P on the curve x^4 y^5 = a^9 meet the x and y axes in A and B respectively Then AP:PB=?
 one year ago
 one year ago

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sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
x^4 y^4 =a^9 d(x^4 y^4)/dx =d(a^9)/dx d(x^4)/dx *y^4 + x^4 d(y^4)/dx =0 4x^3y^4 +x^4 4y^3 dy/dx=0 dy/dx =4x^3y^4/(4x^4y^3) dy/dx =y/x
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
Oh...No......There is a mistake in the question Sorry
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
It is x^4 y^5 = a^9
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
dy/dx = 4y/5x
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
x^4 y^5 =a^9 d(x^4 y^5)/dx =d(a^9)/dx d(x^4)/dx *y^5 + x^4 d(y^5)/dx =0 4x^3y^5+x^4 5y^4 dy/dx=0 dy/dx =4x^3y^5/(5x^4y^4) dy/dx =4y/5x
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
dw:1359203248993:dwNow, coordinate of P is
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
Now, can u?
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
Now Using Distance Formula Ryt ( x ,0) (0,y)
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
U need to find coordinate of A and B
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
First find equation of tangent
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
Then we have to find x and y intercept ryt ?
 one year ago
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