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How many distinct solutions does the following equation have? log(base x^2 +2) (4-5x^2 - 6x^3) = 2 a)None, b)1, c)2, d)4, e)Infinitely many

log(base x 2 +2) (4-5x 2 - 6x 3 ) = 2 is equivalent to 4-5x 2 -6x 3 =(x 2 +2) 2 Therefore, we are looking for solutions to the equation 4 - 5x 2 - 6x 3 = x 4 + 4x 2 + 4 => x 4 + 6x 3 + 9x 2 = 0 => x 2 ...
TM
Answered by Teodora M. • MAT tutor
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Evaluate the reasons for continuing working class underachievement in the education system (30 marks)

PLAN:1 - Subcultures - Willis - 12 lads, formed anti-school subculture as felt system taught MC valuesLacey - Pro and anti school pupil subcultures emerge in response to labelling; labelling can create succe...
EG
Answered by Ella G. • Sociology tutor
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Applying material from Item A, analyse two ways in which the media may cause crime (10 marks)

As Item A suggests, the media presents ‘a number of different lifestyles… which some audiences may see as attractive’. Left Realists, Lea and Young, argue that the media increases relative deprivation, among...
EG
Answered by Ella G. • Sociology tutor
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Find the angle between two lines with vector equations r1 = (2i+j+k)+t(3i-5j-k) and r2 = (7i+4j+k)+s(2i+j-9k)

Explain the dot product and the relation : a.b= ¦a¦ ¦b¦ cos(x) where a.b is the dot product of two vectors, ¦a¦ and ¦b¦ are the magnitude of a and b respectively and x is the angle between them. Since the an...
MS
Answered by Muhammad S. • Maths tutor
6478 Views

Derive the quadratic formula form the general quadratic equation

Write the general quadratic equation : ax 2 +bx+c = 0 Need to solve for 'x' using completing the square method. 1 - Divide through by 'a' in order to get into a form which we can complete the square of : x 2...
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Answered by Muhammad S. • Maths tutor
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