Limit of Integration (TIFR 2014 problem 7)
Question: Let \(f_n(x); n\ge 1\) be a sequence of continuous nonnegative functions on \(0,1\) such that \( \lim_{n\to\infty} \int_{0}^{1}f_n(x)dx = …
TIFR
Inequality in intergation (TIFR 2014 problem 6)
Question: Let \(f:0,1 \to \mathbb{R} \) be a continuous function. Which of the following statement is always true? A. \( …
Convergence of sequence (TIFR 2014 problem 5)
Question: Let \(a_n= (n+1)^{100}e^{-\sqrt{n}}\) for \(n \ge 1\). Then the sequence \(a_n\) is A. unbounded B. bounded but not convergent …
Checking for Uniform continuity(TIFR 2014 problem 4)
Question: Let \(f:0,\infty)\to \mathbb{R}\) be defined by \( f(x)=x^{2/3}logx\) for \(x>0 \) \(f(x)=0\) if \(x=0\) Then A. f is discontinuous …
Function bounds from derivative limits (TIFR 2014 problem 3)
Question: Let \(f:\mathbb{R}\to \mathbb{R}\) be a differentiable function such that \(\lim_{x\to \infty} f'(x)=1\) then A. f is bounded B. f …
Continuous Bounded Function (TIFR 2014 problem 2)
Question: (MCQ) Let \(f:\mathbb{R}\to \mathbb{R}\) be a continuous bounded function. Then A. f has to be uniformly continuous B. there …
Negation (TIFR 2014 problem 1)
Question: (MCQ) Let A,B,C be three subsets of \(\mathbb{R}\) The negation of the following statement: For every \(\epsilon >1\), there …
Convergence of alternating series (TIFR 2013 problem 40)
Question: True/False? The series \(1-\frac{1}{\sqrt2}+\frac{1}{\sqrt3}-\frac{1}{\sqrt4}+…\) is divergent. Hint: Recall the alternating series test (or the Leibniz test) Discussion: Let \(a_n=\frac{1}{\sqrt{n}}\). …
Rank and Trace of Idempotent matrix (TIFR 2013 problem 39)
Question: True/False? If \(A\) is a complex nxn matrix with \(A^2=A\), then rank\(A\)=trace\(A\). Hint: What are the eigenvalues of \(A\)? …
Eigenvalue of differentiation (TIFR 2013 problem 38)
Question: True/False? Let \(V\) be the vector space of polynomials with real coefficients in variable \(t\) of degree \( \le …