Core 3 Differentiation
Find the equation of the tangent to the curve y = 50 / ( 2x +1 )^2 at the point (3,2), giving your answer in the form ax + by + c = 0, where a, b and c are integers
is this correct??
y = 50 ( 2x -1 ) ^-2
dy/dx = -200( 2x - 1)^-3
so 8x + 5y -34 = 0
is this correct??
y = 50 ( 2x -1 ) ^-2
dy/dx = -200( 2x - 1)^-3
so 8x + 5y -34 = 0
Original post by Custardcream000
Find the equation of the tangent to the curve y = 50 / ( 2x +1 )^2 at the point (3,2), giving your answer in the form ax + by + c = 0, where a, b and c are integers
is this correct??
y = 50 ( 2x -1 ) ^-2
dy/dx = -200( 2x - 1)^-3
so 8x + 5y -34 = 0
is this correct??
y = 50 ( 2x -1 ) ^-2
dy/dx = -200( 2x - 1)^-3
so 8x + 5y -34 = 0
What check can you do to make sure your answer is right?
Original post by SeanFM
What check can you do to make sure your answer is right?
plug the coordinate in
forgot lol
Original post by Custardcream000
plug the coordinate in
forgot lol
forgot lol
Correct. After that I would just look at the differentiation again with fresh eyes and that you've found the correct value for dy/dx, but yes, it looks right.
Original post by SeanFM
Correct. After that I would just look at the differentiation again with fresh eyes and that you've found the correct value for dy/dx, but yes, it looks right.
thankyou
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