Answer:
Given,
x=
15
2
Then,
−(−x)
=−(−
15
2
)=
15
2
As we know that by the sign rule of multiplication: (-ve) multiplied (-ve) equals (+ve)
Hence, proved −(−x)=x.
a. The gradient is
b. The gradient at point P(1, 2) is
c. The derivative of at P in the direction of is
It looks like
so that
Then
3 cups!
2 (cups) make 20 biscuits so 1 cup makes 10
so 2 + 1 (cups of flour ) = 20 + 10 biscuits
1/2 / 3/4
= 1/2 x 4/3
= 4/6
= 2/3
a = 2
b = 4
c = 3
d = 2
e = 3