Fundamental of Mathematics Statistics 47 – 49 23 Mathematical Reasoning 49 – 50 24 Sets and Relation Standard equation of the hyperbola is 1 2b
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Fundamental of Mathematics Statistics 47 – 49 23 Mathematical Reasoning 49 – 50 24 Sets and Relation Standard equation of the hyperbola is 1 2b
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Page # 1
S.No.Topic Page No.
1.Straight Line2 - 3
2.Circle4
3.Parabola5
4.Ellips5 -6
5.Hyperbola6 - 7
6.Limit of Function8 - 9
7.Method of Differentiation9 - 11
8.Application of Derivatves11 - 13
9.Indefinite Intedration14 - 17
10.Definite Integration17 - 18
11.Fundamental of Mathematics19 - 21
12.Quadratic Equation22 - 24
13.Sequence & Series24 - 26
14.Binomial Theorem26 - 27
15.Permutation & Combinnation28 - 29
16.Probability29 - 30
17.Complex Number31 - 32
18.Vectors32 - 35
19.Dimension35 - 40
20.Solution of Triangle41 - 44
21.Inverse Trigonometric Functions44 - 46
22.Statistics47 - 49
23.Mathematical Reasoning49 - 50
24.Sets and Relation50 - 51
INDEXMATHEMATICS
FORMULA BOOKLET - GYAAN SUTRA
Page # 2
MATHEMATICS
FORMULA BOOKLET - GYAAN SUTRA
STRAIGHT LINE
1.Distance Formula:
2 21 2 1 2d (x - x ) (y - y ) .
2.Section Formula :
x = nm xnxm12 ; y = nm ynym123.Centroid, Incentre & Excentre:
Centroid G
3 yyy,3 xxx321321,Incentre I
cba cybyay,cba cxbxax321321Excentre I1
cba cybyay,cba cxbxax3213214.Area of a Triangle:
ABC = 1yx 1yx 1yx 2 1 3322
11
5.Slope Formula:
Line Joining two points (x1 y1) & (x2 y2), m =
2121
xx yy
6.Condition of collinearity of three points:
1yx 1yx 1yx 3322
11 = 0
7.Angle between two straight lines :
tan = 2121
mm1 mm
Page # 3
8.Two Lines :
ax + by + c = 0 and ax + by + c = 0 two lines1. parallel if a
a =b b c c2. Distance between two parallel lines = 22
21ba cc
3 Perpendicular : If aa + bb = 0.
9.A point and line:
1. Distance between point and line = axbyc
ab 11 222. Reflection of a point about a line:
221111
ba cbyax2b yy a xx
3. Foot of the perpendicular from a point on the line is
221111
ba cbyax b yy a xx
10.Bisectors of the angles between two lines:
22bacybxa 22ba
cybxa
11.Condition of Concurrency :
of three straight lines aix+ biy + ci = 0, i = 1,2,3 is abc abc abc 111222
333
= 0.
12.A Pair of straight lines through origin:
ax² + 2hxy + by² = 0 If is the acute angle between the pair of straight lines, then tan = ba bah22Page # 4
CIRCLE
1.Intercepts made by Circle x2 + y2 + 2gx + 2fy + c = 0 on the Axes:
(a) 2cg2 on x -axis(b) 2cf2 on y - aixs2.Parametric Equations of a Circle:
x = h + r cos ; y = k + r sin3.Tangent :
(a) Slope form : y = mx ± 2m1a (b) Point form : xx1 + yy1 = a2 or T = o (c) Parametric form :x cos + y sin = a.4.Pair of Tangents from a Point: SS1 = T².
5.Length of a Tangent : Length of tangent is1S
6.Director Circle: x2 + y2 = 2a2 for x2 + y2 = a2
7.Chord of Contact: T = 0
1. Length of chord of contact =22LR
RL22. Area of the triangle formed by the pair of the tangents & its chord of
contact = 22 3 LR LR3. Tangent of the angle between the pair of tangents from (x1, y1)
22RLLR2
4. Equation of the circle circumscribing the triangle PT1 T2 is :
(x x1) (x + g) + (y y1) (y + f) = 0.8.Condition of orthogonality of Two Circles: 2 g1 g2 + 2 f1 f2 = c1 + c2.
9.Radical Axis : S1 S2 = 0 i.e. 2 (g1 g2) x + 2 (f1 f2) y + (c1 c2) = 0.
10.Family of Circles: S1 + K S2 = 0, S + KL = 0.
Page # 5
PARABOLA
1.Equation of standard parabola :
y2 = 4ax, Vertex is (0, 0), focus is (a, 0), Directrix is x + a = 0 and Axis is y = 0. Length of the latus rectum = 4a, ends of the latus rectum are L(a, 2a) & L' (a, 2a).2.Parametric Representation: x = at² & y = 2at
3.Tangents to the Parabola y² = 4ax:
1. Slope form y = mx +m
a (m 0)2. Parametric form ty = x + at23. Point form T = 0
4.Normals to the parabola y² = 4ax :
y y1 =a2 y1 (x x1) at (x1, y1) ; y = mx 2am am3 at (am2 2am) ; y + tx = 2at + at3 at (at2, 2at).ELLIPSE
1.Standard Equation : 2
2 2 2 b y a x = 1, where a > b & b² = a² (1 e²).Eccentricity: e =2
2 a b1, (0 < e < 1), Directrices : x = ± e a. Focii : S (± a e, 0). Length of, major axes = 2a and minor axes = 2bVertices : A ( a, 0) & A (a, 0) .
Latus Rectum : = 22
e1a2a b22.Auxiliary Circle : x² + y² = a²
3.Parametric Representation : x = a cos & y = b sin
4.Position of a Point w.r.t. an Ellipse:
The point P(x1, y1) lies outside, inside or on the ellipse according as; 1b y a x 2 212
21 > < or = 0.
Page # 6
5.Line and an Ellipse:
The line y = mx + c meets the ellipse 2
2 2 2 b y a x = 1 in two points real, coincident or imaginary according as c² is < = or > a²m² + b².6.Tangents:
Slope form: y = mx ± 222bma, Point form : 1b
yy a xx 2 1 2 1,Parametric form: 1b
siny a cosx7.Normals:
1 2 1 2 y yb x xa = a² b², ax. sec by. cosec = (a² b²), y = mx 22222
mba mba
8.Director Circle: x² + y² = a² + b²
HYPERBOLA
1.Standard Equation:
Standard equation of the hyperbola is12b
2y 2a2x, where b2 = a2 (e2 1).
Focii :S (± ae, 0) Directrices : x = ± a
eVertices : A (± a, 0)
Latus Rectum ( ) : = a
b22 = 2a (e2 1).2.Conjugate Hyperbola :
1b y a x 2 2 2 2 & 1b y a x 2 2 2 2 are conjugate hyperbolas of each.3.Auxiliary Circle : x2 + y2 = a2.
4.Parametric Representation : x = a sec & y = b tan
Page # 7
5.Position of A Point 'P' w.r.t. A Hyperbola :
S1 1b y a x 2 2 1 2 21 >, = or < 0 according as the point (x1, y1) lies inside, on
or outside the curve.6.Tangents :
(i)Slope Form : y = m x222bma (ii)Point Form : at the point (x1, y1) is 1b yy a xx 2 1 2 1. (iii)Parametric Form : 1b anty a secx.7.Normals :
(a)at the point P (x1, y1) is 1 2 1 2 y yb x xa = a2 + b2 = a2 e2. (b)at the point P (a sec , b tan ) is tan yb sec xa = a2 + b2 = a2 e2. (c)Equation of normals in terms of its slope 'm' are y = mx 22222
mba mba