Bear in mind that these just highlight important points or the points i thought to be important for math __P-1. Before going through these be confident that you are already prepared. In addition these points will help you in achieving better marks in exam papers. These points also cover some of the points sometimes we just ignore but are important. If you feel any complications while going through please let me know.
1)1, 2, 3,……. are natural numbers.
2).....,-1, 0, 1, 2,…. Are integers.
3)Rational and irrational numbers constitute real numbers.
4)Surds___ numbers in root form…(cube root, square root)
5)Rationalizing surd__ Removing surd from denominator
6)Range__f(x), domain__ values of x.
7)Modulus__[x]=x or [x]= -x
8)If (b^2) - 4ac >0_____ it will have two real roots
9)If (b^2) - 4ac <0_____>
10)If (b^2) - 4ac =0_____it will have equal roots or one root only.
11)Division or multiplication of an inequality by negative number changes the sign.(- to + or vice versa)
12)tan (angle)= gradient of a line, subtract the gradient of the given 2 lines and use formula to find the angle between the two lines.
13)For arithmetic progression, Sn=0.5n(a+l) or Sn=0.5n(2a+(n-1)d)
14)For geometric progression, Sn=a(1-r^n)/1-r and sum to infinity=a/1-r
15)Infinite geometric series is said to be convergent if [r]<1.
16)Note surface area and volume of cylinder, sphere, cone, pyramid and prism. These are important….. You must remember them.
17)Term independent of x__ take x^0
18)No term in x^2____take 0x^2.
We will be adding more points to the notes in successive posts.
No comments:
Post a Comment