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Differentiate: y = 3x^2 + 4x + 1 -4x^-1

dy/dx = 6x +4 +4x-2

HF
Answered by Harry F. Maths tutor
2895 Views

Write an equation for the complete combustion of C9H20

Complete combustion is the oxidation of a fuel where the only products exist as CO2 and H2O.
C9H20 + nO2 ==> nCO2 + nH2<...

HF
Answered by Harry F. Chemistry tutor
6184 Views

To what extent was fall of the USSR in the years 1985-1990 due to the ending of the Brezhnev Doctrine?

There were several reasons behind the collapse of the USSR in the 1980s, many of which were intertwined. While the ending of the Brezhnev Doctrine, and the subsequent collapse of the Communist regimes in ...

JH
Answered by Joe H. History tutor
2154 Views

Solve y=x^2 - 1, y=5 - x

x= -3, y= 8 and x= 2, y= 3
(1) 5 - x = x^2 - 1(2) x^2 + x - 6 = 0(3) (x+3)(x-2) = 0(4) when x = -3, y= 5 - (-3) = 8(5) when x = 2, y= 5 -(2) = 3

TB
Answered by Tamim B. Maths tutor
3002 Views

Explain the multi-store memory model

The multi-store memory model is a cognitive model which was designed by Atkinson and Shifrin (1968) which conceptualises the different stores of memory. It begins with the sensory store, which includes bo...

EP
Answered by Ellen P. Psychology tutor
2739 Views

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