What is the fourth part of mathematics compulsory course of PEP?

What is the fourth part of mathematics compulsory course of PEP?

Trigonometric function, plane vector, trigonometric identity transformation

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Divide the figure below into 4 pieces of the same shape and size

The shape of each block is "concave", accounting for 5 grids

The axis of symmetry of an axisymmetric figure is a ()

The axis of symmetry of an axisymmetric figure is a (straight line)

How many cubic meters of space will 10 cube cartons with 4.5 decimeters of edge length be stacked in the corner

911.25

It is known that the absolute value of a satisfied by non-zero vectors a and B is equal to one, and (a-b) × (a + b) = & frac12; find the absolute value of B

As shown in the figure, △ ABC, ab = AC, D is any point on the edge of BC, DF ⊥ AC is on point F, e is on the edge of AB, ed ⊥ BC is on point D, ∠ AED = 155 °, then ∠ EDF is equal to______ ．

The answer is: 65 °

How to draw function graph?
I need to systematically talk about the drawing methods of binary, ternary, trigonometric functions and so on, such as f (x) = ax * x + BX + C, how to judge whether the opening is moving up and down, left or right, narrowed or wide,
I just asked if I couldn't come up with the research. Does the bookstore systematically talk about this? Which one

Quadratic function: quadratic coefficient a > 0, opening up, a

Questions about the translation of functions according to vectors
For example, if the function y = f (x) is translated according to vector (4,2), does it move the whole image of the function four units to the right and then two units up, or four units to the left and then two units up?

The graph is four to the right and then two to the right, because it is translated according to the vector, not x, y translation. X translation is sitting plus right subtraction, while the vector is moving according to the direction of the vector, but the variable is x minus four, y plus 2

The bisectors BP and CP of the two outer angles of triangle ABC intersect at point P. the distance from point P to three sides AB, AC and BC is equal

Two triangles of the same angle bisector are congruent