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Given g(x) = 4* sin (3*x), find the value of g'(pi/3).

Using the table of standard derivatives given at the beginning of the Higher Paper we have, for f(x) = sin(a x), f'(x) = a * cos (a x)and so with this we have, g(x) = 4 * sin(3 x), g'(x) = 4 * 3 * cos(3 x) =...
RM
Answered by Romy M. • Maths tutor
1311 Views

Anna and Lionel share $675 in the ratio 4 : 5 Lionel gives 3 5 of his share of the money to his mother. How much money does Lionel give to his mother?

4 + 5 =9Lionel receives 5/9 x $675 = $375Lionel's mum receives 3/5 x $375 = $225
AI
Answered by Asiyah I. • Maths tutor
12848 Views

Solve the simultaneous equations. 2x+5y=-4 and 7x+y=19

This can be solved using either substitution or elimination. I think this question is best approached by elimination. By elimination: Multiply the second equation by 5. The minus the first equation from the ...
NW
Answered by Nisha W. • Maths tutor
3709 Views

Sam is a bodybuilder. He currently weighs 90kg, but is aiming to be at 130kg in the next four months. Every month, he puts on 8% of his weight. Does he reach his target?

90kg x (1.08)^4= 122.44....No, he does not reach his target
AS
Answered by ANGELICA S. • Maths tutor
3157 Views

Prove the square root of 2 is irrational

Explain proof by contradictionAssume sqrt(2) is rational i.e. can be expressed as the ratio of two integers: a/bUse algebraic steps to find this statement results in a contradictionirrationality proved by co...
JP
Answered by Joseph P. • Maths tutor
3566 Views