Find the equation of the tangent and normal to the curve y2 = 4

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 Multiple Choice QuestionsShort Answer Type

81.

Show that the normal at any point 0 to the curve
x = a cosө + a ө sinө. y = a sin ө – a ө cos ө
is at a constant distance from the origin.

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82.

Find the equation of the tangent and normal to the given curves at the points given:
y = x2 at (0,0).

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83.

Find the equation of the tangent and normal to the given curves at the points given:
y2 = 4ax at (0, 0).

89 Views

84.

Find the equation of the tangent and normal to the given curves at the points given:
y = x3 at (1, 1)

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85.

Find the equation of the tangent and normal to the given curves at the points given:
y = x2 at (2, 8)

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 Multiple Choice QuestionsLong Answer Type

86.

Find the equation of tangent and normal to the hyperbola straight x squared over straight a squared minus straight y squared over straight b squared space equals space 1 space space space space at space the space point space space left parenthesis straight x subscript 0 comma space space space straight y subscript 0 right parenthesis

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 Multiple Choice QuestionsShort Answer Type

87. Find the equation of the normal at the point (am2, am3) for the curve ay= x3.
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88.

Find the equation of the tangent and the normal to the curve straight x to the power of 2 over 3 end exponent plus straight y to the power of 2 over 3 end exponent space equals space 2 space space space at space space left parenthesis 1 comma space 1 right parenthesis.

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89. Find the equation of the tangent and normal to the curve y2 = 4ax at (at2, 2at)


The equation of curve is straight y squared space equals space 4 ax
therefore space space space space space 2 straight y dy over dx space equals space 4 straight a space space space space space space space space space space space space space space space rightwards double arrow space space space space dy over dx space equals space fraction numerator 2 straight a over denominator straight y end fraction
At space left parenthesis at squared comma space space 2 at right parenthesis comma space space space dy over dx space equals space fraction numerator 2 straight a over denominator 2 at end fraction space equals space 1 over straight t
therefore space space space space space space space at space left parenthesis at squared comma space space 2 at right parenthesis comma space space slope space of space tangent space space equals space 1 over straight t
therefore space space space space space space equation space of space tangent space to space the space curve space at space left parenthesis at squared comma space space space 2 at right parenthesis space is
space space space space space space space space space space space space straight y minus 2 at space equals space 1 over straight t left parenthesis straight x minus at squared right parenthesis space space space space or space space space space space ty minus 2 at squared space equals space straight x minus at squared space space or space space space ty space equals space straight x plus at squared.
At space left parenthesis at squared comma space space 2 at right parenthesis comma space space space slope space of space normal space equals space space straight t
therefore space space space space space space equation space of space normal space to space the space curve space at space left parenthesis at squared comma space space space 2 at right parenthesis space is
space space space space space space space space space space space straight y minus 2 at space equals space minus straight t left parenthesis straight x minus at squared right parenthesis
space or space space space space space space space straight y minus 2 at space equals space minus tx plus at cubed
or space space space space space space space straight y space equals negative tx plus 2 at plus at cubed.

space space

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 Multiple Choice QuestionsLong Answer Type

90.

Find the equation of the tangent and normal to the curve
straight x equals space 1 minus cos space straight theta comma space space space space straight y space equals space straight theta space minus sin space straight theta space space space at space straight theta space equals space straight pi over 4

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