Mark-Andrew
- Rate R300
- Response 1h
R300/h
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- Maths
B.Sc.(Mathematics);B.Ed(Mathematics Education);M.Sc (Mathematics Education-Wits); taught at :High Schools;College of Education; Uni-Limpopo; UNISA (Maths Education);also helped some students on-line a
- Maths
Lesson location
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At Mark-Andrew's home: Durban
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About Mark-Andrew
Work Experience
2018-2020 Mathematics Tutor (University of South Africa-UNISA): Mathematics and Mathematics Teaching (PST 201)
2015- Mathematics Consultancy and support for schools (Eastern Cape ; Kwazulu-Natal)
2011-2014 Mathematics & Mathematics Education Lecturer at the University of Limpopo
Modules taught: MATE 221 (Introduction to Calculus)
2012-2013 MATE 311;MATE 321 (Differential & Integral Calculus)
MATE 411;MATE 421 (Differential Equations, Analysis, Calculus, Sequences and Series).
2009-2011 MASTEASA (Mathematics, Science, & Technology South Africa) Mathematics
Support for schools-The use of graphmaticas & ICT in mathematics teaching and
Learning in rural schools;using solar energy or generator; also piloting
Collaborative and computer-based mathematics learning. In addition giving
Support to (INSET) UNISA ACE Maths Educators.
2007-2009 Mathematics Advisor (FET) in the Sisonke District (Kwazulu-Natal Education)
2002-2007 Mathematics Advisor (FET) in the Sisonke District (Kwazulu-Natal Education)
2002-2006 MIP (Matric Improvement ) Coordinator (Umzimkulu District-Eastern Cape)
Eastern Cape)
2005-2009 National Science Week Grant Holder for UMZIMASTE
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About the lesson
- All levels
- English
Languages in which the lesson is available :
English
NATURE OF ROOTS OF THE QUADRATIC FUNCTION
The expression b2 - 4ac called the discriminant is crucial when determining the type or nature of roots that the quadratic function can have. We have the following cases:
CASE EXAMPLE
1. Real roots : Here b2 - 4a c 0 x2 +4x+4=0 or x2 +5x+6=0
1.1 Real equal roots : Here b2 - 4a c = 0 x2 +4x+4=0 ; 42 -4 (1)(4) = 0
1.2 Real unequal roots :Here b2 - 4a c > 0 x2 +5x+6=0 ; 52 -4 (1)(6) = 1 > 0
(concealed information) roots: Here b2 - 4a c < 0 x2 +2x+4=0 ; 22 -4 (1)(4) = - 12 < 0
Figure 14: Real unequal roots : x = -3 or x = -1
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Rates
Rate
- R300
Package rates
- 5h: R1500
- 10h: R3000
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