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Byju's Answer
Standard XII
Mathematics
Equation of Tangent at a Point (x,y) in Terms of f'(x)
Find the equa...
Question
Find the equation of the tangent to the curve
y
=
3
x
2
at
(
1
,
1
)
.
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Solution
Slope of the tangent to the curve at any point
(
x
,
y
)
=
d
y
d
x
at
(
x
,
y
)
d
y
d
x
=
d
(
3
x
2
)
d
x
=
6
x
At
(
1
,
1
)
, the slope of the tangent would be
6
Hence, the equation of line passing through
(
1
,
1
)
and having a slope of
6
is given by
y
−
1
=
6
(
x
−
1
)
⇒
6
x
−
y
=
5
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Equation of Tangent at a Point (x,y) in Terms of f'(x)
Standard XII Mathematics
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