1. If f(x)=3x−7, find f(6).

2. Evaluate: lim (x→0) (sin 5x / 2x).

3. Solve: x²−6x+8=0.

4. If log₃(27)=x, find x.

5. Evaluate: ∫ (3x²) dx.

6. Determinant of |4 7; 2 5| is:

7. Period of y = sin(3x) is:

8. Derivative of cos²x is:

9. Differentiate: ln(5x).

10. Sum of first n even numbers is: