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Jamb Variation: Direct, Inverse, Joint & Partial

Modified On Nov 28, 2021 By Isaac

Variation Under Jamb Mathematics: Candidates should be able to:

i. solve problems involving direct, inverse, joint and partial variations;
ii. solve problems on percentage increase and decrease in variation.

A variable is simply a quantity that may change in value. A variable might be the the air temperature each day, or the exam marks given to a class of school children. Watch the Video and tell me how you feel.

Joint Variation is where more than two variables are related directly. Partial Variation, where two variables are related by a formula, such as the formula for a straight line (with a non-zero y-intercept).

Highlights From The Video

1. In Mathematics, we usually deal with two types of quantities-Variable quantities (or variables) and Constant quantities (or constants).

2. Constants are quantities whose values do not change.

3. In a variation if variables change proportionately it is called direct variation.

4. For inverse variation, the increase in one quantity results to decrease in the other.

5. Two variable quantities are proportional if one is always obtainable from the other by multiplying by a constant value.

Calculations In Jamb Mathematics Variation

Checkout The Calculation questions commonly asked by Jamb in Variation

E.g… The length l of a simple pendulum varies directly as the square of it’s period T. If a pendulum with period 4 sec is 64cm long, find the length of a pendulum which is 9 sec.

A. 36cm B. 144cm  C. 324cm D. 96cm

Let me know how you feel via the comment box and don’t fail to share with your friends.

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About FlashIsaac

FlashLearners CEO, Students Advocate, SEO Expert And YouTuber

9 Comments

  1. Patience says

    The cost require to paint the room measure 20m by 30m is #200 and that of a room is measure 15m by 40m is #256.
    What is the cost of table 60 meter square

    Reply
  2. charles christopher says

    may god bless u

    Reply
    • Isaac Inegbenehi says

      Amen

      Reply
  3. Moshood Ridwan says

    Flashlearner is the best educational website I have ever knew before

    Reply
    • Isaac Inegbenehi says

      Thanks dear

      Reply
  4. precious nwakaeze says

    the answer is B.

    Reply
    • Tactical Genius says

      C not B

      Reply
  5. Onaghinor Sarah says

    Thanks Flashisaac

    Reply
    • Isaac Inegbenehi says

      You are welcome

      Reply

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