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Laieeqa
Subject: Maths
, asked on 22/2/18
Solve this:
Q.7. Find whether the function
$\mathrm{cos}\left(2x+\frac{\mathrm{\pi}}{4}\right);\frac{3\mathrm{\pi}}{8}x\frac{5\mathrm{\pi}}{8}$
is increasing or decreasing.
Answer
1
Riya Verma
Subject: Maths
, asked on 21/2/18
Determine the interval, where f(x)=sin x - cos x, 0
Answer
1
Riya Verma
Subject: Maths
, asked on 21/2/18
In case(a) step no.3 , instead of taking x-1 can't we take x-3 or x+1 given in above step ?and the intervals will be different. If not then explain with reason.
Answer
2
Sofiya Parihar
Subject: Maths
, asked on 12/2/18
Solve question no.37
Q.37. Find the equations or tangent and normal to curve
$x=1-\mathrm{cos}\theta andy=\theta -\mathrm{sin}\theta $
at
$\theta =\frac{\mathrm{\pi}}{4}$
.
Answer
1
Sofiya Parihar
Subject: Maths
, asked on 12/2/18
Solve question no 31 and 32
Q.31.
$f\left(x\right)=\mathrm{log}\left(1+x\right)-\frac{x}{1+x},x\ne -1$
Q.32.
$f\left(x\right)=\left(x+2\right){e}^{-x}$
Answer
1
Ashwini.. .
Subject: Maths
, asked on 10/2/18
How we find distance of a normal of a curve from origin (0,0)
Answer
1
Ashwini.. .
Subject: Maths
, asked on 10/2/18
Solve this: .
Q.6 Show that the normal at any pointe to the curve x = a cos
$\theta $
+ a
$\theta $
sin
$\theta $
, y = a sin
$\theta $
- a
$\theta $
cos
$\theta $
is at a constant distance from the origin.
Answer
2
Ashwini.. .
Subject: Maths
, asked on 10/2/18
Find the point on the curve
y
^{2}
= 8
x
+ 3 for which the
y
-coordinate changes 4 times more than coordinate of
x
.
Answer
1
Sofiya Parihar
Subject: Maths
, asked on 9/2/18
7) Find the equation of tangent to the curve
$y={x}^{4}-6{x}^{3}+13{x}^{2}-10x+5atpointx=1,y=0.$
8) Find the equation of tangent to the curve
$4{x}^{2}+9{y}^{2}=36atthepoint(3\mathrm{cos}\theta ,2\mathrm{sin}\theta ).$
Answer
1
Jassimrat Kaur
Subject: Maths
, asked on 4/2/18
Please solve the question
Q. If at each point on the curve y =
x
^{1}
–
ax
^{2}
+
x
+1 the tangent is inclined at an acute angle with positive direction of x axis , then
(a) a > 0 (b) a
$\le \sqrt{3}$
(c) |a|
$\le \sqrt{3}$
(d) none of these
Answer
1
Mitali
Subject: Maths
, asked on 30/1/18
Kindly solve.. this is a meritnstion question but i doubt it's solution... pls refer
Q5. Three distinct points A, B and C are given in the 2 - dimensional coordinate plane such that the ratio of distance of any one of them from the point (1,0) to the distance from the point (– 1, 0) is equal to
$\frac{1}{3}$
. Then the circumcvented of the triangle ABC is at the point
(A) ( 0, 0)
(B)
$\left(\frac{5}{4},0\right)$
(C)
$\left(\frac{5}{2},0\right)$
(D)
$\left(\frac{5}{3},0\right)$
Answer
1
Akshit Chaturvedi
Subject: Maths
, asked on 30/1/18
The length of the shortest normal chord of the parabola y
^{2}
= 4x is what ?
Answer
1
Riya Verma
Subject: Maths
, asked on 30/1/18
In qno.15 does 16ml needs to be converted into cm as other units are also in cm? Explain with proper reason
Q15. Oil is leaking at the rate of 16 mI./s from a vertically kept cylindrical drum containing oil. If the radius of the drum is 7 cm and its height is 60 cm, find the rate at which the level of the oil is changing when the oil level is 18 cm.
Answer
1
Riya Verma
Subject: Maths
, asked on 30/1/18
Plz solve qno.18
Q.18. Find an angle x which increases twice as fast as its sine.
Answer
1
Riya Verma
Subject: Maths
, asked on 30/1/18
Plz solve qno.14 in brief with formulas
Answer
1
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What are you looking for?

Q.7. Find whether the function $\mathrm{cos}\left(2x+\frac{\mathrm{\pi}}{4}\right);\frac{3\mathrm{\pi}}{8}x\frac{5\mathrm{\pi}}{8}$ is increasing or decreasing.

Q.37. Find the equations or tangent and normal to curve $x=1-\mathrm{cos}\theta andy=\theta -\mathrm{sin}\theta $ at $\theta =\frac{\mathrm{\pi}}{4}$.

Q.31. $f\left(x\right)=\mathrm{log}\left(1+x\right)-\frac{x}{1+x},x\ne -1$

Q.32. $f\left(x\right)=\left(x+2\right){e}^{-x}$

Q.6 Show that the normal at any pointe to the curve x = a cos $\theta $ + a $\theta $ sin $\theta $, y = a sin $\theta $ - a $\theta $ cos $\theta $ is at a constant distance from the origin.

y^{2}= 8x+ 3 for which they-coordinate changes 4 times more than coordinate ofx.8) Find the equation of tangent to the curve $4{x}^{2}+9{y}^{2}=36atthepoint(3\mathrm{cos}\theta ,2\mathrm{sin}\theta ).$

Q. If at each point on the curve y =

x^{1}–ax^{2}+x+1 the tangent is inclined at an acute angle with positive direction of x axis , then(a) a > 0 (b) a $\le \sqrt{3}$ (c) |a| $\le \sqrt{3}$ (d) none of these

Q5. Three distinct points A, B and C are given in the 2 - dimensional coordinate plane such that the ratio of distance of any one of them from the point (1,0) to the distance from the point (– 1, 0) is equal to $\frac{1}{3}$. Then the circumcvented of the triangle ABC is at the point

(A) ( 0, 0)

(B) $\left(\frac{5}{4},0\right)$

(C) $\left(\frac{5}{2},0\right)$

(D) $\left(\frac{5}{3},0\right)$

^{2} = 4x is what ?Q15. Oil is leaking at the rate of 16 mI./s from a vertically kept cylindrical drum containing oil. If the radius of the drum is 7 cm and its height is 60 cm, find the rate at which the level of the oil is changing when the oil level is 18 cm.

Q.18. Find an angle x which increases twice as fast as its sine.