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Why do the atomic radii of the elements decrease across a period on the periodic table.

It may seem counterintuative that as the elemets' atomic numbers increase their atomic radii decrease. This is due to the increased electrostatic attraction (coulombic interaction) between nucleus and val...

DH
Answered by Daniel H. Chemistry tutor
3046 Views

Find the value of the discriminant of x2 + 6x + 11

For a quadratic equation in the form ax^2+bx+c=0 the determinant is given by b^2-4ac and is used to help identify the types of roots of the equation. In this case, the determinant is (6)^2-4(1)(11) which ...

EC
Answered by Emily C. Maths tutor
8328 Views

Find the derivative of the function y=3x^2e^(2x)sin(x).

y is the product of three different function, so we would use the product rule in order to calculate the derivative of the curve. In order to apply the product rule we need to find the derivatives of each...

SR
Answered by Shreya R. Maths tutor
6039 Views

f(x)=(2x+1)/(x-1) with domain x>3. (a)Find the inverse of f(x). (b)Find the range of f(x). (c) g(x)=x+5 for all x. Find the value of x such that fg(x)=3.

(a) Let y=f(x). Then y = (2x+1)/(x-1). Rearrange the equation to get x in terms of y to obtain the inverse function. This gives x=(1+y)/(y-2). So the inverse of f is f-1(x)=(1+x)/(x-2)<...

LA
Answered by Lutfha A. Maths tutor
4512 Views

What is the demand and the supply in a market ? How can you draw them how do you derive the optimal price and quantity *?

The demand is the quantity that consumers demand for a good/service at a certain price. The more quantity asked,  lower is the price. The demand has a negative slope.

The supply is the quantity of ...

YK
Answered by Yannis K. Economics tutor
1922 Views

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