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Online form 4 mathematics video lessons and lectures in Kenya

14 video lessons

• Given that cos 2x^o = 0.8070, find x when 0⁰ = x = 180⁰
  

  Given that cos 2x^o = 0.8070, find x when 0⁰ = x = 180⁰

  
  Form 4, Mathematics: Trigonometry 3

  Date posted: March 11, 2019.

• An aircraft took off from a point P(65⁰s,76⁰w) and flew due north to a point Q. The distance between P and Q is 5400nm. Determine the position of Q.
  

  An aircraft took off from a point P(65⁰s,76⁰w) and flew due north to a point Q. The distance between P and Q is 5400nm. Determine the position of Q.

  
  Form 4, Mathematics: Longitude and Latitude

  Date posted: March 11, 2019.

• The gradient of the tangent to the curve y = ax³ + bx at the point (1,1) is —5. Calculate the values of a and b
  

  The gradient of the tangent to the curve y = ax³ + bx at the point (1,1) is —5. Calculate the values of a and b

  
  Form 4, Mathematics: Calculus

  Date posted: March 7, 2019.

• Find the gradient of y=x² -3x at x=1
  

  Find the gradient of y=x² -3x at x=1

  
  Form 4, Mathematics: Calculus

  Date posted: March 5, 2019.

• The distance s metres moved by a particle along a straight line after t seconds in motion is given by s = 7 +8t² – 2t³. Find the velocity at t = 2 sec.
  

  The distance s metres moved by a particle along a straight line after t seconds in motion is given by s = 7 +8t² – 2t³. Find the velocity at t = 2 sec.

  
  Form 4, Mathematics: Calculus

  Date posted: March 1, 2019.

• A pilot starts flying from city M to city P. Given that M (30°N, 70°E) and P (30°N, 20°W) taking pi = 22/7 and radius of the earth R = 6370 km,
  

  A pilot starts flying from city M to city P. Given that M (30°N, 70°E) and P (30°N, 20°W) taking?? =3.14 and radius of the earth R = 6370 km, Calculate: (a) the distance between city M and city P along the parallel of latitude. (i) in km (ii) in nm b)The local time at city M if the...

  
  Form 4, Mathematics: Longitude and Latitude

  Date posted: March 1, 2019.

• Find the area of P in the following question
  

  Find the area of P in the following question

  
  Form 4, Mathematics: Matrices and Transformation

  Date posted: February 27, 2019.

• Find the velocity of a particle whose displacement s is given by; S=t³ – 5t² + 3t + 10 at t=5 seconds.
  

  Find the velocity of a particle whose displacement s is given by; S=t³ – 5t² + 3t + 10 at t=5 seconds.

  
  Form 4, Mathematics: Calculus

  Date posted: February 27, 2019.

• Solve for x 4sin(x+20)⁰ =3 for 0⁰=x= 360⁰.
  

  Solve for x 4sin(x+20)⁰ =3 for 0⁰=x= 360⁰.

  
  Form 4, Mathematics: Trigonometry 3

  Date posted: February 27, 2019.

• An aeroplane flew due south from appoint A(60^oN,45^oE),to a point B.The distance covered by the aeroplane was 8000km. Determine the position of B.
  

  An aeroplane flew due south from appoint A(60^oN,45^oE),to a point B.The distance covered by the aeroplane was 8000km.Determine the position of B.

  
  Form 4, Mathematics: Longitude and Latitude

  Date posted: February 23, 2019.

• The point A(5,2) undergoes the transformation $\begin{bmatrix}3&2\\-1&0\\ \end{bmatrix}$ followed by a translation $\begin{pmatrix}-6\\11\\ \end{pmatrix}$.Determine the coordinates of the image.
  

  The point A(5,2) undergoes the transformation $\begin{bmatrix}3&2\\-1&0\\ \end{bmatrix}$ followed by a translation $\begin{pmatrix}-6\\11\\ \end{pmatrix}$.Determine the coordinates of the image.

  
  Form 4, Mathematics: Matrices and Transformation

  Date posted: February 23, 2019.

• Use differentiation to find x coordinate of the maximum point for the curve. Y=x³+2x²-4x-8
  

  Use differentiation to find x coordinate of the maximum point for the curve. Y=x³+2x²-4x-8

  
  Form 4, Mathematics: Calculus

  Date posted: February 21, 2019.

• The curve y=ax³ - 3x² - 2x+1 has the gradient 7 when x=1,Find the value of a.
  

  The curve y=ax³ - 3x² - 2x+1 has the gradient 7 when x=1,Find the value of a.

  
  Form 4, Mathematics: Calculus

  Date posted: February 20, 2019.

• The position of towns M and N are M(0 °, 5 l °W) and N(0 °, 37 °E). Find the distance between the two
  

  The position of towns M and N are M(0 °, 5 l °W) and N(0 °, 37 °E). Find the distance between the two towns in kilometres, correct to one decimal place. (Take the radius of the earth as 6370km and p = 22/7)

  
  Form 4, Mathematics: Longitude and Latitude

  Date posted: February 18, 2019.