Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
CBSE XII Board Exam Series
BES Math
BES Physics
BES Chemistry
BES Biology
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
CBSE XII Board Exam Series
BES Math
BES Physics
BES Chemistry
BES Biology
mobile
exams
ask
sample papers
tutors
pricing
login
X
ASK
Home
>>
TN XII Math
>>
Objective type Questions and Answers
The gradient of the tangent to the curve $y=8+4x-2x^{2}$ at the point where the curve cuts the $y$-axis is
\[\begin{array}{1 1}(1)8&(2)4\\(3)0&(4)-4\end{array}\]
tnstate
class12
bookproblem
p231
objective
q20
sec-a
easy
Share
asked
May 16, 2013
by
poojasapani_1
edited
May 16, 2013
by
poojasapani_1
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1 Answer
$y= 8+4x-2x^2$
To obtain the point of intersection with $y-axis$ put $x= 0$
$y=8$
The point of intersection is (0,8)
$y= 8+4x-2x^2$
$\large\frac{dy}{dx} $$=4-4x$
$\large\frac{dy}{dx} $$/(0,8) =4-0=4$
Hence 2 is the correct answer.
answered
May 19, 2014
by
meena.p
Please
log in
or
register
to add a comment.
Related questions
If a normal makes an angle $\theta$ with positive $x$-axis then the slope of the curve at the point where the normal is drawn is
tnstate
class12
bookproblem
p231
objective
q23
sec-a
medium
modelpaper
oct-2007
asked
May 16, 2013
by
poojasapani_1
1
answer
For the curve $x=e^{t}\cos t: y=e^{t}\sin t$ the tangent line is parallel to the $x$-axis when $t$ is equal to
tnstate
class12
bookproblem
p231
objective
q22
sec-a
medium
asked
May 16, 2013
by
poojasapani_1
1
answer
The Angle between the parabolas $y^{2}=x$ and $x^{2}=y$ at the origin is
tnstate
class12
bookproblem
p231
objective
q21
sec-a
medium
asked
May 16, 2013
by
poojasapani_1
1
answer
If $y=6x-x^{3}$ and $x$ increases at the rate of $5$ units per second, the rate of change of slope when $x=3 $ is
tnstate
class12
bookproblem
p231
objective
q18
sec-a
easy
asked
May 16, 2013
by
poojasapani_1
1
answer
The value of $'a'$ so that the curves $y=3e^{x}$ and $y=\large\frac{a}{3}e^{x}$ intersect orthogonally is
tnstate
class12
bookproblem
p231
objective
q24
sec-a
medium
asked
May 16, 2013
by
poojasapani_1
1
answer
The curve $ay^{2}=x^{2}(3a-x)$ cuts the $y$-axis at
tnstate
class12
bookproblem
p235
objective
q59
modelpaper
mar-2008
asked
May 21, 2013
by
poojasapani_1
1
answer
The Rolle's constant for the function $y=x^{2}$ on $[-2,2] $ is
tnstate
class12
bookproblem
p231
objective
q27
asked
May 16, 2013
by
poojasapani_1
1
answer
Ask Question
Tag:
Math
Phy
Chem
Bio
Other
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
...