Given: I1=∫01e−xcos2xdxI2=∫01e−x2cos2xdx and I3=∫01e−x3dx For x∈(0,1)⇒x>x2 or −x<−x2 and x2>x3 or −x2<−x3∴e−x2<e−x3 and e−x<e−x2⇒e−x<e−x2<e−x3⇒e−x3>e−x2>e−x⇒I3>I2>I1
JEE Main 2018 — Mathematics Calculus
If I1=∫01e−xcos2xdx;I2=∫01e−x2cos2xdx and I3=∫01e−x3dx; then
Held on 15 Apr 2018 · Verified 6 Jul 2026.
I2>I3>I1
I3>I1>I2
I2>I1>I3
I3>I2>I1
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