Project #7317 - some math questions need awnsers, some annotation alongside working out.

1. Find the coordinates of the point in which the lines x-3y=1 and 2x=5y+3 intersect

2. express as a single logorithm 2loga^3-loga^15+loga^5

3. prove the following identity

cos^2A + cos2A= 2-3sin^2A  (

only to the power of two not 2A ,so cos(squared)A + cos2A = 2-3sin(squared)A)

4. Find the value of x 5^7x5^4 ÷ 5^x =25

5. 2x^2+3x+1        find the maximum or minimum, it's value, the value of x for which it occurs

6. x^2 + y^2 + 4x - 2y = 21 find the equation of (i) the tangent (ii) the centre of the circle at the point (3,2)

 Subject Mathematics Due By (Pacific Time) 05/29/2013 07:54 am
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