Math Test Grade 1: step up

数検1級

Practice questions

  1. Which is the determinant det(A) of the matrix A=[[2,1],[3,2]]?

    • 7
    • 1
    • 2
    • -1

  2. Which is the local minimum value of y=x⁴-4x²?

    • 4
    • -4
    • 0
    • -2

  3. For A=[[1,0],[0,2]] and B=[[3,1],[2,4]], what is the (1,2) entry of AB?

    • 4
    • 3
    • 1
    • 2

  4. What is the derivative of y=ln(3x)?

    • ln(3)/x
    • 1/x
    • 3ln(x)
    • 3/x

  5. What is the value of lim(x→∞)(√(x+1)-√x)?

    • 0
    • 1
    • ∞
    • 1/2

Math Test Grade 1 Prep: related lessons