Can somebody prove this mathmatical induction?

See explanation

Step-by-step explanation:

1 step:

n=1, then

So, for j=1 this statement is true

2 step:

Assume that for n=k the following statement is true

3 step:

Check for n=k+1 whether the statement

is true.

Start with the left side:

According to the 2nd step,

Substitute it into the

So, you have proved the initial statement

d is correct

step-by-step explanation:

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "